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Finding the Fourth Proportional to 168.83, 232.89 and 137.78

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Solution

The fourth proportional to 168.83, 232.89 and 137.78 is: 190.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.83 : 232.89 = 137.78 : x
  2. Step 2: Convert to fraction form
    168.83/232.89 = 137.78/x
  3. Step 3: Cross multiply
    168.83x = 232.89 × 137.78
  4. Step 4: Simplify right side
    168.83x = 32,087.58
  5. Step 5: Solve for x
    x = 32,087.58/168.83
  6. Step 6: Final answer
    x = 190.06

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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.