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Finding the Fourth Proportional to 132,387.50, 182,569.02 and 87,103.91

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Solution

The fourth proportional to 132,387.50, 182,569.02 and 87,103.91 is: 120,120.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,387.50 : 182,569.02 = 87,103.91 : x
  2. Step 2: Convert to fraction form
    132,387.50/182,569.02 = 87,103.91/x
  3. Step 3: Cross multiply
    132,387.50x = 182,569.02 × 87,103.91
  4. Step 4: Simplify right side
    132,387.50x = 15,902,475,486.87
  5. Step 5: Solve for x
    x = 15,902,475,486.87/132,387.50
  6. Step 6: Final answer
    x = 120,120.67

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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.