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Finding the Fourth Proportional to 143,907.29, 215,737.85 and 55,224.44

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Solution

The fourth proportional to 143,907.29, 215,737.85 and 55,224.44 is: 82,789.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,907.29 : 215,737.85 = 55,224.44 : x
  2. Step 2: Convert to fraction form
    143,907.29/215,737.85 = 55,224.44/x
  3. Step 3: Cross multiply
    143,907.29x = 215,737.85 × 55,224.44
  4. Step 4: Simplify right side
    143,907.29x = 11,914,001,676.93
  5. Step 5: Solve for x
    x = 11,914,001,676.93/143,907.29
  6. Step 6: Final answer
    x = 82,789.42

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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.