Home / 138,067.28-207,101.42-42,005.43

Finding the Fourth Proportional to 138,067.28, 207,101.42 and 42,005.43

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Solution

The fourth proportional to 138,067.28, 207,101.42 and 42,005.43 is: 63,008.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,067.28 : 207,101.42 = 42,005.43 : x
  2. Step 2: Convert to fraction form
    138,067.28/207,101.42 = 42,005.43/x
  3. Step 3: Cross multiply
    138,067.28x = 207,101.42 × 42,005.43
  4. Step 4: Simplify right side
    138,067.28x = 8,699,383,371.57
  5. Step 5: Solve for x
    x = 8,699,383,371.57/138,067.28
  6. Step 6: Final answer
    x = 63,008.29

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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.