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Finding the Fourth Proportional to 143,510.52, 215,265.96 and 68,613.06

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Solution

The fourth proportional to 143,510.52, 215,265.96 and 68,613.06 is: 102,919.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,510.52 : 215,265.96 = 68,613.06 : x
  2. Step 2: Convert to fraction form
    143,510.52/215,265.96 = 68,613.06/x
  3. Step 3: Cross multiply
    143,510.52x = 215,265.96 × 68,613.06
  4. Step 4: Simplify right side
    143,510.52x = 14,770,056,229.44
  5. Step 5: Solve for x
    x = 14,770,056,229.44/143,510.52
  6. Step 6: Final answer
    x = 102,919.68

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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.