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Finding the Fourth Proportional to 168.22, 232.06 and 112.99

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Solution

The fourth proportional to 168.22, 232.06 and 112.99 is: 155.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.22 : 232.06 = 112.99 : x
  2. Step 2: Convert to fraction form
    168.22/232.06 = 112.99/x
  3. Step 3: Cross multiply
    168.22x = 232.06 × 112.99
  4. Step 4: Simplify right side
    168.22x = 26,220.46
  5. Step 5: Solve for x
    x = 26,220.46/168.22
  6. Step 6: Final answer
    x = 155.87

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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.