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Finding the Fourth Proportional to 143,591.54, 198,174.90 and 82,361.61

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Solution

The fourth proportional to 143,591.54, 198,174.90 and 82,361.61 is: 113,669.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,591.54 : 198,174.90 = 82,361.61 : x
  2. Step 2: Convert to fraction form
    143,591.54/198,174.90 = 82,361.61/x
  3. Step 3: Cross multiply
    143,591.54x = 198,174.90 × 82,361.61
  4. Step 4: Simplify right side
    143,591.54x = 16,322,004,134.45
  5. Step 5: Solve for x
    x = 16,322,004,134.45/143,591.54
  6. Step 6: Final answer
    x = 113,669.68

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1.5x scale

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.