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Finding the Fourth Proportional to 132,531.72, 182,891.04 and 72,103.80

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Solution

The fourth proportional to 132,531.72, 182,891.04 and 72,103.80 is: 99,501.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,531.72 : 182,891.04 = 72,103.80 : x
  2. Step 2: Convert to fraction form
    132,531.72/182,891.04 = 72,103.80/x
  3. Step 3: Cross multiply
    132,531.72x = 182,891.04 × 72,103.80
  4. Step 4: Simplify right side
    132,531.72x = 13,187,138,969.95
  5. Step 5: Solve for x
    x = 13,187,138,969.95/132,531.72
  6. Step 6: Final answer
    x = 99,501.76

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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.