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Finding the Fourth Proportional to 126,695.88, 174,844.98 and 81,983.88

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Solution

The fourth proportional to 126,695.88, 174,844.98 and 81,983.88 is: 113,140.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,695.88 : 174,844.98 = 81,983.88 : x
  2. Step 2: Convert to fraction form
    126,695.88/174,844.98 = 81,983.88/x
  3. Step 3: Cross multiply
    126,695.88x = 174,844.98 × 81,983.88
  4. Step 4: Simplify right side
    126,695.88x = 14,334,469,858.92
  5. Step 5: Solve for x
    x = 14,334,469,858.92/126,695.88
  6. Step 6: Final answer
    x = 113,140.77

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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.