Home / 138,748.91-191,473.50-75,086.71

Finding the Fourth Proportional to 138,748.91, 191,473.50 and 75,086.71

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Solution

The fourth proportional to 138,748.91, 191,473.50 and 75,086.71 is: 103,619.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,748.91 : 191,473.50 = 75,086.71 : x
  2. Step 2: Convert to fraction form
    138,748.91/191,473.50 = 75,086.71/x
  3. Step 3: Cross multiply
    138,748.91x = 191,473.50 × 75,086.71
  4. Step 4: Simplify right side
    138,748.91x = 14,377,114,922.56
  5. Step 5: Solve for x
    x = 14,377,114,922.56/138,748.91
  6. Step 6: Final answer
    x = 103,619.66

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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.