Let the third number = xxx
Then the first number = 100% x+35%x=135x + 35\%x = 135x+35%x=135%x=135x100=1.35xx = \frac{135x}{100} = 1.35xx=100135x=1.35x (Note: 100% x=xx = xx=x)
The second number = 180% x=180x100=1.80xx = \frac{180x}{100} = 1.80xx=100180x=1.80x
∴ The ratio of the first number to the second number = 1.35x:1.80x=3:41.35x : 1.80x = 3 : 41.35x:1.80x=3:4
