Home / 138,934.92-191,731.05-75,272.70

Finding the Fourth Proportional to 138,934.92, 191,731.05 and 75,272.70

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Solution

The fourth proportional to 138,934.92, 191,731.05 and 75,272.70 is: 103,876.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,934.92 : 191,731.05 = 75,272.70 : x
  2. Step 2: Convert to fraction form
    138,934.92/191,731.05 = 75,272.70/x
  3. Step 3: Cross multiply
    138,934.92x = 191,731.05 × 75,272.70
  4. Step 4: Simplify right side
    138,934.92x = 14,432,113,807.34
  5. Step 5: Solve for x
    x = 14,432,113,807.34/138,934.92
  6. Step 6: Final answer
    x = 103,876.79

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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.