Home / 138,161.24-207,191.10-49,390.68

Finding the Fourth Proportional to 138,161.24, 207,191.10 and 49,390.68

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Solution

The fourth proportional to 138,161.24, 207,191.10 and 49,390.68 is: 74,067.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,161.24 : 207,191.10 = 49,390.68 : x
  2. Step 2: Convert to fraction form
    138,161.24/207,191.10 = 49,390.68/x
  3. Step 3: Cross multiply
    138,161.24x = 207,191.10 × 49,390.68
  4. Step 4: Simplify right side
    138,161.24x = 10,233,309,318.95
  5. Step 5: Solve for x
    x = 10,233,309,318.95/138,161.24
  6. Step 6: Final answer
    x = 74,067.87

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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.