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Finding the Fourth Proportional to 143,504.92, 198,046.26 and 79,842.86

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Solution

The fourth proportional to 143,504.92, 198,046.26 and 79,842.86 is: 110,188.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,504.92 : 198,046.26 = 79,842.86 : x
  2. Step 2: Convert to fraction form
    143,504.92/198,046.26 = 79,842.86/x
  3. Step 3: Cross multiply
    143,504.92x = 198,046.26 × 79,842.86
  4. Step 4: Simplify right side
    143,504.92x = 15,812,579,810.70
  5. Step 5: Solve for x
    x = 15,812,579,810.70/143,504.92
  6. Step 6: Final answer
    x = 110,188.42

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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.