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Finding the Fourth Proportional to 143,229.52, 214,859.16 and 68,337.04

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Solution

The fourth proportional to 143,229.52, 214,859.16 and 68,337.04 is: 102,512.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,229.52 : 214,859.16 = 68,337.04 : x
  2. Step 2: Convert to fraction form
    143,229.52/214,859.16 = 68,337.04/x
  3. Step 3: Cross multiply
    143,229.52x = 214,859.16 × 68,337.04
  4. Step 4: Simplify right side
    143,229.52x = 14,682,839,011.29
  5. Step 5: Solve for x
    x = 14,682,839,011.29/143,229.52
  6. Step 6: Final answer
    x = 102,512.66

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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.