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Finding the Fourth Proportional to 120,863.60, 181,272.72 and 50,743.52

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Solution

The fourth proportional to 120,863.60, 181,272.72 and 50,743.52 is: 76,105.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,863.60 : 181,272.72 = 50,743.52 : x
  2. Step 2: Convert to fraction form
    120,863.60/181,272.72 = 50,743.52/x
  3. Step 3: Cross multiply
    120,863.60x = 181,272.72 × 50,743.52
  4. Step 4: Simplify right side
    120,863.60x = 9,198,415,892.77
  5. Step 5: Solve for x
    x = 9,198,415,892.77/120,863.60
  6. Step 6: Final answer
    x = 76,105.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.