Home / 138,801.33-191,545.60-75,139.11

Finding the Fourth Proportional to 138,801.33, 191,545.60 and 75,139.11

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Solution

The fourth proportional to 138,801.33, 191,545.60 and 75,139.11 is: 103,691.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,801.33 : 191,545.60 = 75,139.11 : x
  2. Step 2: Convert to fraction form
    138,801.33/191,545.60 = 75,139.11/x
  3. Step 3: Cross multiply
    138,801.33x = 191,545.60 × 75,139.11
  4. Step 4: Simplify right side
    138,801.33x = 14,392,565,908.42
  5. Step 5: Solve for x
    x = 14,392,565,908.42/138,801.33
  6. Step 6: Final answer
    x = 103,691.84

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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.