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Finding the Fourth Proportional to 143,354.77, 215,035.11 and 52,167.05

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Solution

The fourth proportional to 143,354.77, 215,035.11 and 52,167.05 is: 78,251.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,354.77 : 215,035.11 = 52,167.05 : x
  2. Step 2: Convert to fraction form
    143,354.77/215,035.11 = 52,167.05/x
  3. Step 3: Cross multiply
    143,354.77x = 215,035.11 × 52,167.05
  4. Step 4: Simplify right side
    143,354.77x = 11,217,747,335.13
  5. Step 5: Solve for x
    x = 11,217,747,335.13/143,354.77
  6. Step 6: Final answer
    x = 78,251.65

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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.