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Finding the Fourth Proportional to 168,079.68, 231,945.68 and 91,600.74

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Solution

The fourth proportional to 168,079.68, 231,945.68 and 91,600.74 is: 126,406.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,079.68 : 231,945.68 = 91,600.74 : x
  2. Step 2: Convert to fraction form
    168,079.68/231,945.68 = 91,600.74/x
  3. Step 3: Cross multiply
    168,079.68x = 231,945.68 × 91,600.74
  4. Step 4: Simplify right side
    168,079.68x = 21,246,396,156.81
  5. Step 5: Solve for x
    x = 21,246,396,156.81/168,079.68
  6. Step 6: Final answer
    x = 126,406.69

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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.