Finding the Fourth Proportional to 138,470.20, 207,727.14 and 48,537.70
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Solution
The fourth proportional to 138,470.20, 207,727.14 and 48,537.70 is: 72,814.21
Step by Step Solution
- Step 1: Write the proportion equation
138,470.20 : 207,727.14 = 48,537.70 : x - Step 2: Convert to fraction form
138,470.20/207,727.14 = 48,537.70/x - Step 3: Cross multiply
138,470.20x = 207,727.14 × 48,537.70 - Step 4: Simplify right side
138,470.20x = 10,082,597,603.18 - Step 5: Solve for x
x = 10,082,597,603.18/138,470.20 - Step 6: Final answer
x = 72,814.21
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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.