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Finding the Fourth Proportional to 101,666.10, 140,348.79 and 67,694.70

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Solution

The fourth proportional to 101,666.10, 140,348.79 and 67,694.70 is: 93,451.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,666.10 : 140,348.79 = 67,694.70 : x
  2. Step 2: Convert to fraction form
    101,666.10/140,348.79 = 67,694.70/x
  3. Step 3: Cross multiply
    101,666.10x = 140,348.79 × 67,694.70
  4. Step 4: Simplify right side
    101,666.10x = 9,500,869,234.41
  5. Step 5: Solve for x
    x = 9,500,869,234.41/101,666.10
  6. Step 6: Final answer
    x = 93,451.69

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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.