Question

find thr mean proportion of 81,121​

Answer 1

Mean proportion between 81 & 121 = 99

Step-by-step explanation:

the mean proportion between 81 and 121,

81 : a  : 121

=> 81 : a  :: a  : 121

=> 81/a = a/121

=> a² = 81 * 121

=> a² = 9² * 11²

=> a² = ( 9  * 11)²

=> a² = 99²

=> a = 99

Mean proportion between 81 & 121 = 99

Answer 2

Answer:101

Step-by-step explanation:81+ 121=202

202/2=101