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Finding the Fourth Proportional to 143,254.43, 214,778.72 and 67,310.15

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Solution

The fourth proportional to 143,254.43, 214,778.72 and 67,310.15 is: 100,916.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,254.43 : 214,778.72 = 67,310.15 : x
  2. Step 2: Convert to fraction form
    143,254.43/214,778.72 = 67,310.15/x
  3. Step 3: Cross multiply
    143,254.43x = 214,778.72 × 67,310.15
  4. Step 4: Simplify right side
    143,254.43x = 14,456,787,860.01
  5. Step 5: Solve for x
    x = 14,456,787,860.01/143,254.43
  6. Step 6: Final answer
    x = 100,916.86

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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.