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Finding the Fourth Proportional to 132,565.60, 182,942.72 and 72,138.79

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Solution

The fourth proportional to 132,565.60, 182,942.72 and 72,138.79 is: 99,552.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,565.60 : 182,942.72 = 72,138.79 : x
  2. Step 2: Convert to fraction form
    132,565.60/182,942.72 = 72,138.79/x
  3. Step 3: Cross multiply
    132,565.60x = 182,942.72 × 72,138.79
  4. Step 4: Simplify right side
    132,565.60x = 13,197,266,460.11
  5. Step 5: Solve for x
    x = 13,197,266,460.11/132,565.60
  6. Step 6: Final answer
    x = 99,552.72

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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.