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Finding the Fourth Proportional to 143,416.44, 215,151.96 and 68,542.44

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Solution

The fourth proportional to 143,416.44, 215,151.96 and 68,542.44 is: 102,826.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,416.44 : 215,151.96 = 68,542.44 : x
  2. Step 2: Convert to fraction form
    143,416.44/215,151.96 = 68,542.44/x
  3. Step 3: Cross multiply
    143,416.44x = 215,151.96 × 68,542.44
  4. Step 4: Simplify right side
    143,416.44x = 14,747,040,309.18
  5. Step 5: Solve for x
    x = 14,747,040,309.18/143,416.44
  6. Step 6: Final answer
    x = 102,826.71

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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.