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Finding the Fourth Proportional to 143,608.92, 198,176.94 and 79,945.44

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Solution

The fourth proportional to 143,608.92, 198,176.94 and 79,945.44 is: 110,322.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,608.92 : 198,176.94 = 79,945.44 : x
  2. Step 2: Convert to fraction form
    143,608.92/198,176.94 = 79,945.44/x
  3. Step 3: Cross multiply
    143,608.92x = 198,176.94 × 79,945.44
  4. Step 4: Simplify right side
    143,608.92x = 15,843,342,666.15
  5. Step 5: Solve for x
    x = 15,843,342,666.15/143,608.92
  6. Step 6: Final answer
    x = 110,322.83

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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.