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Finding the Fourth Proportional to 132,276.40, 182,550.54 and 74,915

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Solution

The fourth proportional to 132,276.40, 182,550.54 and 74,915 is: 103,387.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,276.40 : 182,550.54 = 74,915 : x
  2. Step 2: Convert to fraction form
    132,276.40/182,550.54 = 74,915/x
  3. Step 3: Cross multiply
    132,276.40x = 182,550.54 × 74,915
  4. Step 4: Simplify right side
    132,276.40x = 13,675,773,704.10
  5. Step 5: Solve for x
    x = 13,675,773,704.10/132,276.40
  6. Step 6: Final answer
    x = 103,387.86

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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.