Home / 143,972.25-198,647.87-87,372.69

Finding the Fourth Proportional to 143,972.25, 198,647.87 and 87,372.69

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Solution

The fourth proportional to 143,972.25, 198,647.87 and 87,372.69 is: 120,553.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,972.25 : 198,647.87 = 87,372.69 : x
  2. Step 2: Convert to fraction form
    143,972.25/198,647.87 = 87,372.69/x
  3. Step 3: Cross multiply
    143,972.25x = 198,647.87 × 87,372.69
  4. Step 4: Simplify right side
    143,972.25x = 17,356,398,764.67
  5. Step 5: Solve for x
    x = 17,356,398,764.67/143,972.25
  6. Step 6: Final answer
    x = 120,553.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.