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Finding the Fourth Proportional to 143,609.73, 198,184.92 and 79,951.83

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Solution

The fourth proportional to 143,609.73, 198,184.92 and 79,951.83 is: 110,335.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,609.73 : 198,184.92 = 79,951.83 : x
  2. Step 2: Convert to fraction form
    143,609.73/198,184.92 = 79,951.83/x
  3. Step 3: Cross multiply
    143,609.73x = 198,184.92 × 79,951.83
  4. Step 4: Simplify right side
    143,609.73x = 15,845,247,032.40
  5. Step 5: Solve for x
    x = 15,845,247,032.40/143,609.73
  6. Step 6: Final answer
    x = 110,335.47

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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.