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Finding the Fourth Proportional to 132,518, 182,874.84 and 72,902

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Solution

The fourth proportional to 132,518, 182,874.84 and 72,902 is: 100,604.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,518 : 182,874.84 = 72,902 : x
  2. Step 2: Convert to fraction form
    132,518/182,874.84 = 72,902/x
  3. Step 3: Cross multiply
    132,518x = 182,874.84 × 72,902
  4. Step 4: Simplify right side
    132,518x = 13,331,941,585.68
  5. Step 5: Solve for x
    x = 13,331,941,585.68/132,518
  6. Step 6: Final answer
    x = 100,604.76

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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.