Finding the Fourth Proportional to 113,704.68, 156,912.12 and 63,403.68
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Solution
The fourth proportional to 113,704.68, 156,912.12 and 63,403.68 is: 87,496.89
Step by Step Solution
- Step 1: Write the proportion equation
113,704.68 : 156,912.12 = 63,403.68 : x - Step 2: Convert to fraction form
113,704.68/156,912.12 = 63,403.68/x - Step 3: Cross multiply
113,704.68x = 156,912.12 × 63,403.68 - Step 4: Simplify right side
113,704.68x = 9,948,805,844.60 - Step 5: Solve for x
x = 9,948,805,844.60/113,704.68 - Step 6: Final answer
x = 87,496.89
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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.