Finding the Fourth Proportional to 156,782.10, 235,000.35 and 86,711.70
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Solution
The fourth proportional to 156,782.10, 235,000.35 and 86,711.70 is: 129,971.98
Step by Step Solution
- Step 1: Write the proportion equation
156,782.10 : 235,000.35 = 86,711.70 : x - Step 2: Convert to fraction form
156,782.10/235,000.35 = 86,711.70/x - Step 3: Cross multiply
156,782.10x = 235,000.35 × 86,711.70 - Step 4: Simplify right side
156,782.10x = 20,377,279,849.10 - Step 5: Solve for x
x = 20,377,279,849.10/156,782.10 - Step 6: Final answer
x = 129,971.98
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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.