Finding the Fourth Proportional to 136,687.70, 205,031.55 and 136,687.70
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Solution
The fourth proportional to 136,687.70, 205,031.55 and 136,687.70 is: 205,031.55
Step by Step Solution
- Step 1: Write the proportion equation
136,687.70 : 205,031.55 = 136,687.70 : x - Step 2: Convert to fraction form
136,687.70/205,031.55 = 136,687.70/x - Step 3: Cross multiply
136,687.70x = 205,031.55 × 136,687.70 - Step 4: Simplify right side
136,687.70x = 28,025,290,996.94 - Step 5: Solve for x
x = 28,025,290,996.94/136,687.70 - Step 6: Final answer
x = 205,031.55
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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.