Finding the Fourth Proportional to 138,576.97, 207,943.41 and 75,401.65
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Solution
The fourth proportional to 138,576.97, 207,943.41 and 75,401.65 is: 113,144.89
Step by Step Solution
- Step 1: Write the proportion equation
138,576.97 : 207,943.41 = 75,401.65 : x - Step 2: Convert to fraction form
138,576.97/207,943.41 = 75,401.65/x - Step 3: Cross multiply
138,576.97x = 207,943.41 × 75,401.65 - Step 4: Simplify right side
138,576.97x = 15,679,275,180.91 - Step 5: Solve for x
x = 15,679,275,180.91/138,576.97 - Step 6: Final answer
x = 113,144.89
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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.