Finding the Fourth Proportional to 125,892.42, 173,711.16 and 74,906.70
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Solution
The fourth proportional to 125,892.42, 173,711.16 and 74,906.70 is: 103,359.12
Step by Step Solution
- Step 1: Write the proportion equation
125,892.42 : 173,711.16 = 74,906.70 : x - Step 2: Convert to fraction form
125,892.42/173,711.16 = 74,906.70/x - Step 3: Cross multiply
125,892.42x = 173,711.16 × 74,906.70 - Step 4: Simplify right side
125,892.42x = 13,012,129,748.77 - Step 5: Solve for x
x = 13,012,129,748.77/125,892.42 - Step 6: Final answer
x = 103,359.12
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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.