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Finding the Fourth Proportional to 138,574.05, 207,882.86 and 45,057.93

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Solution

The fourth proportional to 138,574.05, 207,882.86 and 45,057.93 is: 67,593.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,574.05 : 207,882.86 = 45,057.93 : x
  2. Step 2: Convert to fraction form
    138,574.05/207,882.86 = 45,057.93/x
  3. Step 3: Cross multiply
    138,574.05x = 207,882.86 × 45,057.93
  4. Step 4: Simplify right side
    138,574.05x = 9,366,771,128.79
  5. Step 5: Solve for x
    x = 9,366,771,128.79/138,574.05
  6. Step 6: Final answer
    x = 67,593.98

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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.