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Finding the Fourth Proportional to 138,881.38, 207,966.24 and 96,127.58

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Solution

The fourth proportional to 138,881.38, 207,966.24 and 96,127.58 is: 143,945.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,881.38 : 207,966.24 = 96,127.58 : x
  2. Step 2: Convert to fraction form
    138,881.38/207,966.24 = 96,127.58/x
  3. Step 3: Cross multiply
    138,881.38x = 207,966.24 × 96,127.58
  4. Step 4: Simplify right side
    138,881.38x = 19,991,291,372.90
  5. Step 5: Solve for x
    x = 19,991,291,372.90/138,881.38
  6. Step 6: Final answer
    x = 143,945.08

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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.