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Finding the Fourth Proportional to 165,189.97, 247,752.15 and 80,913.93

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Solution

The fourth proportional to 165,189.97, 247,752.15 and 80,913.93 is: 121,354.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,189.97 : 247,752.15 = 80,913.93 : x
  2. Step 2: Convert to fraction form
    165,189.97/247,752.15 = 80,913.93/x
  3. Step 3: Cross multiply
    165,189.97x = 247,752.15 × 80,913.93
  4. Step 4: Simplify right side
    165,189.97x = 20,046,600,122.45
  5. Step 5: Solve for x
    x = 20,046,600,122.45/165,189.97
  6. Step 6: Final answer
    x = 121,354.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.