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Finding the Fourth Proportional to 126,042.66, 173,938.14 and 68,681.88

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Solution

The fourth proportional to 126,042.66, 173,938.14 and 68,681.88 is: 94,780.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,042.66 : 173,938.14 = 68,681.88 : x
  2. Step 2: Convert to fraction form
    126,042.66/173,938.14 = 68,681.88/x
  3. Step 3: Cross multiply
    126,042.66x = 173,938.14 × 68,681.88
  4. Step 4: Simplify right side
    126,042.66x = 11,946,398,458.90
  5. Step 5: Solve for x
    x = 11,946,398,458.90/126,042.66
  6. Step 6: Final answer
    x = 94,780.60

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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.