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Finding the Fourth Proportional to 140,463.47, 210,672.09 and 60,479.87

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Solution

The fourth proportional to 140,463.47, 210,672.09 and 60,479.87 is: 90,709.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,463.47 : 210,672.09 = 60,479.87 : x
  2. Step 2: Convert to fraction form
    140,463.47/210,672.09 = 60,479.87/x
  3. Step 3: Cross multiply
    140,463.47x = 210,672.09 × 60,479.87
  4. Step 4: Simplify right side
    140,463.47x = 12,741,419,562.47
  5. Step 5: Solve for x
    x = 12,741,419,562.47/140,463.47
  6. Step 6: Final answer
    x = 90,709.85

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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.