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Finding the Fourth Proportional to 124,217.31, 171,422.97 and 67,631.79

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Solution

The fourth proportional to 124,217.31, 171,422.97 and 67,631.79 is: 93,333.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,217.31 : 171,422.97 = 67,631.79 : x
  2. Step 2: Convert to fraction form
    124,217.31/171,422.97 = 67,631.79/x
  3. Step 3: Cross multiply
    124,217.31x = 171,422.97 × 67,631.79
  4. Step 4: Simplify right side
    124,217.31x = 11,593,642,308.22
  5. Step 5: Solve for x
    x = 11,593,642,308.22/124,217.31
  6. Step 6: Final answer
    x = 93,333.55

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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.