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Finding the Fourth Proportional to 138,879.38, 207,963.25 and 96,125.59

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Solution

The fourth proportional to 138,879.38, 207,963.25 and 96,125.59 is: 143,942.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,879.38 : 207,963.25 = 96,125.59 : x
  2. Step 2: Convert to fraction form
    138,879.38/207,963.25 = 96,125.59/x
  3. Step 3: Cross multiply
    138,879.38x = 207,963.25 × 96,125.59
  4. Step 4: Simplify right side
    138,879.38x = 19,990,588,954.41
  5. Step 5: Solve for x
    x = 19,990,588,954.41/138,879.38
  6. Step 6: Final answer
    x = 143,942.10

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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.