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Finding the Fourth Proportional to 143,587.88, 198,169.86 and 82,357.94

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Solution

The fourth proportional to 143,587.88, 198,169.86 and 82,357.94 is: 113,664.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,587.88 : 198,169.86 = 82,357.94 : x
  2. Step 2: Convert to fraction form
    143,587.88/198,169.86 = 82,357.94/x
  3. Step 3: Cross multiply
    143,587.88x = 198,169.86 × 82,357.94
  4. Step 4: Simplify right side
    143,587.88x = 16,320,861,439.69
  5. Step 5: Solve for x
    x = 16,320,861,439.69/143,587.88
  6. Step 6: Final answer
    x = 113,664.62

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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.