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Finding the Fourth Proportional to 135,067.85, 186,404.85 and 74,650.29

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Solution

The fourth proportional to 135,067.85, 186,404.85 and 74,650.29 is: 103,023.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,067.85 : 186,404.85 = 74,650.29 : x
  2. Step 2: Convert to fraction form
    135,067.85/186,404.85 = 74,650.29/x
  3. Step 3: Cross multiply
    135,067.85x = 186,404.85 × 74,650.29
  4. Step 4: Simplify right side
    135,067.85x = 13,915,176,109.91
  5. Step 5: Solve for x
    x = 13,915,176,109.91/135,067.85
  6. Step 6: Final answer
    x = 103,023.60

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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.