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Finding the Fourth Proportional to 168,221.88, 252,507.78 and 123,898.68

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Solution

The fourth proportional to 168,221.88, 252,507.78 and 123,898.68 is: 185,976.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,221.88 : 252,507.78 = 123,898.68 : x
  2. Step 2: Convert to fraction form
    168,221.88/252,507.78 = 123,898.68/x
  3. Step 3: Cross multiply
    168,221.88x = 252,507.78 × 123,898.68
  4. Step 4: Simplify right side
    168,221.88x = 31,285,380,631.73
  5. Step 5: Solve for x
    x = 31,285,380,631.73/168,221.88
  6. Step 6: Final answer
    x = 185,976.88

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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.