Home / 138,013.90-206,502.45-125,572.30

Finding the Fourth Proportional to 138,013.90, 206,502.45 and 125,572.30

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Solution

The fourth proportional to 138,013.90, 206,502.45 and 125,572.30 is: 187,886.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,013.90 : 206,502.45 = 125,572.30 : x
  2. Step 2: Convert to fraction form
    138,013.90/206,502.45 = 125,572.30/x
  3. Step 3: Cross multiply
    138,013.90x = 206,502.45 × 125,572.30
  4. Step 4: Simplify right side
    138,013.90x = 25,930,987,602.14
  5. Step 5: Solve for x
    x = 25,930,987,602.14/138,013.90
  6. Step 6: Final answer
    x = 187,886.78

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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.