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Finding the Fourth Proportional to 143,951.97, 198,654 and 80,293.89

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Solution

The fourth proportional to 143,951.97, 198,654 and 80,293.89 is: 110,805.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,951.97 : 198,654 = 80,293.89 : x
  2. Step 2: Convert to fraction form
    143,951.97/198,654 = 80,293.89/x
  3. Step 3: Cross multiply
    143,951.97x = 198,654 × 80,293.89
  4. Step 4: Simplify right side
    143,951.97x = 15,950,702,424.06
  5. Step 5: Solve for x
    x = 15,950,702,424.06/143,951.97
  6. Step 6: Final answer
    x = 110,805.73

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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.