Finding the Fourth Proportional to 112,708.75, 155,538.09 and 62,407.75
Calculator
Solution
The fourth proportional to 112,708.75, 155,538.09 and 62,407.75 is: 86,122.70
Step by Step Solution
- Step 1: Write the proportion equation
112,708.75 : 155,538.09 = 62,407.75 : x - Step 2: Convert to fraction form
112,708.75/155,538.09 = 62,407.75/x - Step 3: Cross multiply
112,708.75x = 155,538.09 × 62,407.75 - Step 4: Simplify right side
112,708.75x = 9,706,782,236.20 - Step 5: Solve for x
x = 9,706,782,236.20/112,708.75 - Step 6: Final answer
x = 86,122.70
Related Problems
Find fourth proportional to 56,354.38, 77,769.05 and 31,203.88
Half scale
Find fourth proportional to 225,417.50, 311,076.18 and 124,815.50
Double scale
Find fourth proportional to 112,709.75, 155,539.47 and 62,408.75
Similar ratio
Find fourth proportional to 169,063.13, 233,307.14 and 93,611.63
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.