Home / 239,067.18-329,906.25-137,109.78

Finding the Fourth Proportional to 239,067.18, 329,906.25 and 137,109.78

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Solution

The fourth proportional to 239,067.18, 329,906.25 and 137,109.78 is: 189,207.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,067.18 : 329,906.25 = 137,109.78 : x
  2. Step 2: Convert to fraction form
    239,067.18/329,906.25 = 137,109.78/x
  3. Step 3: Cross multiply
    239,067.18x = 329,906.25 × 137,109.78
  4. Step 4: Simplify right side
    239,067.18x = 45,233,373,358.13
  5. Step 5: Solve for x
    x = 45,233,373,358.13/239,067.18
  6. Step 6: Final answer
    x = 189,207.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.