Home / 143,591.13-198,174.33-82,361.21

Finding the Fourth Proportional to 143,591.13, 198,174.33 and 82,361.21

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Solution

The fourth proportional to 143,591.13, 198,174.33 and 82,361.21 is: 113,669.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,591.13 : 198,174.33 = 82,361.21 : x
  2. Step 2: Convert to fraction form
    143,591.13/198,174.33 = 82,361.21/x
  3. Step 3: Cross multiply
    143,591.13x = 198,174.33 × 82,361.21
  4. Step 4: Simplify right side
    143,591.13x = 16,321,876,618.87
  5. Step 5: Solve for x
    x = 16,321,876,618.87/143,591.13
  6. Step 6: Final answer
    x = 113,669.11

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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.