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Finding the Fourth Proportional to 135,306.76, 186,719.52 and 74,879.92

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Solution

The fourth proportional to 135,306.76, 186,719.52 and 74,879.92 is: 103,332.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,306.76 : 186,719.52 = 74,879.92 : x
  2. Step 2: Convert to fraction form
    135,306.76/186,719.52 = 74,879.92/x
  3. Step 3: Cross multiply
    135,306.76x = 186,719.52 × 74,879.92
  4. Step 4: Simplify right side
    135,306.76x = 13,981,542,720.04
  5. Step 5: Solve for x
    x = 13,981,542,720.04/135,306.76
  6. Step 6: Final answer
    x = 103,332.18

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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.