Question

10 : 81 : : 15 : ? find the answer​

Answer 1

1. Let the fourth term be x
2. product of extreme=product of means
3. 10*x=81*15
4. 10x=1215
5. x=121.5

Answer 2

Answer:

121.5

Step-by-step explanation:

extreme terms = mean terms

10 : 81: :15 : x

10*x = 81*15

x= 81*15÷10

x=81*3÷2

x=243÷2

x=121.5