Finding the Fourth Proportional to 137,909.70, 206,864.55 and 102,917.70
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Solution
The fourth proportional to 137,909.70, 206,864.55 and 102,917.70 is: 154,376.55
Step by Step Solution
- Step 1: Write the proportion equation
137,909.70 : 206,864.55 = 102,917.70 : x - Step 2: Convert to fraction form
137,909.70/206,864.55 = 102,917.70/x - Step 3: Cross multiply
137,909.70x = 206,864.55 × 102,917.70 - Step 4: Simplify right side
137,909.70x = 21,290,023,697.54 - Step 5: Solve for x
x = 21,290,023,697.54/137,909.70 - Step 6: Final answer
x = 154,376.55
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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.