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Finding the Fourth Proportional to 100,663.26, 151,044.12 and 71,269.98

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Solution

The fourth proportional to 100,663.26, 151,044.12 and 71,269.98 is: 106,939.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,663.26 : 151,044.12 = 71,269.98 : x
  2. Step 2: Convert to fraction form
    100,663.26/151,044.12 = 71,269.98/x
  3. Step 3: Cross multiply
    100,663.26x = 151,044.12 × 71,269.98
  4. Step 4: Simplify right side
    100,663.26x = 10,764,911,411.52
  5. Step 5: Solve for x
    x = 10,764,911,411.52/100,663.26
  6. Step 6: Final answer
    x = 106,939.83

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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.