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Finding the Fourth Proportional to 132,879.76, 183,375.50 and 72,449.91

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Solution

The fourth proportional to 132,879.76, 183,375.50 and 72,449.91 is: 99,981.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,879.76 : 183,375.50 = 72,449.91 : x
  2. Step 2: Convert to fraction form
    132,879.76/183,375.50 = 72,449.91/x
  3. Step 3: Cross multiply
    132,879.76x = 183,375.50 × 72,449.91
  4. Step 4: Simplify right side
    132,879.76x = 13,285,538,471.21
  5. Step 5: Solve for x
    x = 13,285,538,471.21/132,879.76
  6. Step 6: Final answer
    x = 99,981.66

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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.