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Finding the Fourth Proportional to 135,115.62, 186,453.11 and 73,864.97

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Solution

The fourth proportional to 135,115.62, 186,453.11 and 73,864.97 is: 101,930.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,115.62 : 186,453.11 = 73,864.97 : x
  2. Step 2: Convert to fraction form
    135,115.62/186,453.11 = 73,864.97/x
  3. Step 3: Cross multiply
    135,115.62x = 186,453.11 × 73,864.97
  4. Step 4: Simplify right side
    135,115.62x = 13,772,352,818.09
  5. Step 5: Solve for x
    x = 13,772,352,818.09/135,115.62
  6. Step 6: Final answer
    x = 101,930.13

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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.