Finding the Fourth Proportional to 138,122.10, 207,153.18 and 49,381.74
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Solution
The fourth proportional to 138,122.10, 207,153.18 and 49,381.74 is: 74,061.90
Step by Step Solution
- Step 1: Write the proportion equation
138,122.10 : 207,153.18 = 49,381.74 : x - Step 2: Convert to fraction form
138,122.10/207,153.18 = 49,381.74/x - Step 3: Cross multiply
138,122.10x = 207,153.18 × 49,381.74 - Step 4: Simplify right side
138,122.10x = 10,229,584,474.93 - Step 5: Solve for x
x = 10,229,584,474.93/138,122.10 - Step 6: Final answer
x = 74,061.90
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1.5x scale
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.