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Finding the Fourth Proportional to 168,083.91, 231,949.91 and 91,601.45

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Solution

The fourth proportional to 168,083.91, 231,949.91 and 91,601.45 is: 126,406.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,083.91 : 231,949.91 = 91,601.45 : x
  2. Step 2: Convert to fraction form
    168,083.91/231,949.91 = 91,601.45/x
  3. Step 3: Cross multiply
    168,083.91x = 231,949.91 × 91,601.45
  4. Step 4: Simplify right side
    168,083.91x = 21,246,948,022.44
  5. Step 5: Solve for x
    x = 21,246,948,022.44/168,083.91
  6. Step 6: Final answer
    x = 126,406.79

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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.