Can someone help me figure out which pans to use?

Round cakes to feed 160-170 ppl. I'm thinking 3 tier, but maybe it's 4... they won't be keeping the top tier. I keep coming up short on numbers when I add pans together, and I don't want the cake sizes not to look right together, if that makes sense.

Thanks ~

((( anyone? ))) I would really appreciate some help if anyone knows the answer. I'm a bit confused on the configuration of pans to use. I either go to high or come up way too short.

thanks

Hi! Here's a chart that should be helpful.

http://www.earlenescakes.com/ckserchart.htm

Wilton's chart is good. Earlene discards anything that is not exactly the right size and gives more generous pieces........thus you must charge higher prices to cover the costs.
There are times when you cannot come up with the 'perfect' # they want so you have to ask if they want extra or plan on some people not showing up &/or not eating cake......let the customer make that decision.

6-9-12-15 x 4" round feeds 190, 176 without the top tier

All 4 layers feed 190. Charge for 190. If they remove the top tier, the remaining 3 cakes serve 176 guests.

Thank you