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Finding the Fourth Proportional to 126,354.88, 174,296.64 and 81,642.88

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Solution

The fourth proportional to 126,354.88, 174,296.64 and 81,642.88 is: 112,619.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,354.88 : 174,296.64 = 81,642.88 : x
  2. Step 2: Convert to fraction form
    126,354.88/174,296.64 = 81,642.88/x
  3. Step 3: Cross multiply
    126,354.88x = 174,296.64 × 81,642.88
  4. Step 4: Simplify right side
    126,354.88x = 14,230,079,663.92
  5. Step 5: Solve for x
    x = 14,230,079,663.92/126,354.88
  6. Step 6: Final answer
    x = 112,619.95

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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.