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Finding the Fourth Proportional to 159,553.66, 220,221.57 and 99,169.91

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Solution

The fourth proportional to 159,553.66, 220,221.57 and 99,169.91 is: 136,877.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,553.66 : 220,221.57 = 99,169.91 : x
  2. Step 2: Convert to fraction form
    159,553.66/220,221.57 = 99,169.91/x
  3. Step 3: Cross multiply
    159,553.66x = 220,221.57 × 99,169.91
  4. Step 4: Simplify right side
    159,553.66x = 21,839,352,974.33
  5. Step 5: Solve for x
    x = 21,839,352,974.33/159,553.66
  6. Step 6: Final answer
    x = 136,877.79

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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.