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Finding the Fourth Proportional to 138,481.93, 207,639.86 and 63,508.17

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Solution

The fourth proportional to 138,481.93, 207,639.86 and 63,508.17 is: 95,224.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,481.93 : 207,639.86 = 63,508.17 : x
  2. Step 2: Convert to fraction form
    138,481.93/207,639.86 = 63,508.17/x
  3. Step 3: Cross multiply
    138,481.93x = 207,639.86 × 63,508.17
  4. Step 4: Simplify right side
    138,481.93x = 13,186,827,527.66
  5. Step 5: Solve for x
    x = 13,186,827,527.66/138,481.93
  6. Step 6: Final answer
    x = 95,224.17

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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.