Finding the Fourth Proportional to 138,381.17, 207,571.95 and 38,541.65
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Solution
The fourth proportional to 138,381.17, 207,571.95 and 38,541.65 is: 57,812.52
Step by Step Solution
- Step 1: Write the proportion equation
138,381.17 : 207,571.95 = 38,541.65 : x - Step 2: Convert to fraction form
138,381.17/207,571.95 = 38,541.65/x - Step 3: Cross multiply
138,381.17x = 207,571.95 × 38,541.65 - Step 4: Simplify right side
138,381.17x = 8,000,164,408.86 - Step 5: Solve for x
x = 8,000,164,408.86/138,381.17 - Step 6: Final answer
x = 57,812.52
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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.