The probability that the spinner lands in the gray area is 3/4.
So, 3 on the top line and 4 on the bottom line. (first column)
The other columns are equivalent fractions, that represent the same probability for a different number of spins. So:
Top and bottom:
3 and 4
30 and 40
60 and 80
120 and 160
150 and 200
The number we must multiply the bottom values to find the top values is 3/4, or 0.75.
