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Finding the Fourth Proportional to 207,911.73, 311,872.46 and 67,681.29

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Solution

The fourth proportional to 207,911.73, 311,872.46 and 67,681.29 is: 101,523.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,911.73 : 311,872.46 = 67,681.29 : x
  2. Step 2: Convert to fraction form
    207,911.73/311,872.46 = 67,681.29/x
  3. Step 3: Cross multiply
    207,911.73x = 311,872.46 × 67,681.29
  4. Step 4: Simplify right side
    207,911.73x = 21,107,930,408.27
  5. Step 5: Solve for x
    x = 21,107,930,408.27/207,911.73
  6. Step 6: Final answer
    x = 101,523.52

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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.