Finding the Fourth Proportional to 106,613.70, 159,920.55 and 54,125.70
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Solution
The fourth proportional to 106,613.70, 159,920.55 and 54,125.70 is: 81,188.55
Step by Step Solution
- Step 1: Write the proportion equation
106,613.70 : 159,920.55 = 54,125.70 : x - Step 2: Convert to fraction form
106,613.70/159,920.55 = 54,125.70/x - Step 3: Cross multiply
106,613.70x = 159,920.55 × 54,125.70 - Step 4: Simplify right side
106,613.70x = 8,655,811,713.14 - Step 5: Solve for x
x = 8,655,811,713.14/106,613.70 - Step 6: Final answer
x = 81,188.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.