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Finding the Fourth Proportional to 126,694.88, 174,843.60 and 81,982.88

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Solution

The fourth proportional to 126,694.88, 174,843.60 and 81,982.88 is: 113,139.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,694.88 : 174,843.60 = 81,982.88 : x
  2. Step 2: Convert to fraction form
    126,694.88/174,843.60 = 81,982.88/x
  3. Step 3: Cross multiply
    126,694.88x = 174,843.60 × 81,982.88
  4. Step 4: Simplify right side
    126,694.88x = 14,334,181,877.57
  5. Step 5: Solve for x
    x = 14,334,181,877.57/126,694.88
  6. Step 6: Final answer
    x = 113,139.39

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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.