Solution, 48x = 4× 5

X=4×5÷48

X=5/ 12

1/4∶X = 1/8∶ 1/ 10

Solution,1/8x =1/4xkloc-0/10.

1/8X= 1/40

X= 1/5

5/X=30∶3

Solution, 30x = 5× 3

X=5×3÷30

X= 1/2

3/4∶ 1/8=X∶2

Solution, 1/8x = 3/4× 2

1/8X=3/2

X= 12

6.5∶X=3.25∶4

Solution, 3.25X=6.5×4.

3.25 times =26

X= 104/ 13

1.5∶3/4=0.36∶X

Solution, 1.5x = 3/4× 0.36.

1.5X=0.27

X=0. 18

The length is 192 cm, and the formula is:128 ÷ 2× 3 = 64× 3 =192cm.