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Finding the Fourth Proportional to 168.90, 232.65 and 130.02

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Solution

The fourth proportional to 168.90, 232.65 and 130.02 is: 179.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.90 : 232.65 = 130.02 : x
  2. Step 2: Convert to fraction form
    168.90/232.65 = 130.02/x
  3. Step 3: Cross multiply
    168.90x = 232.65 × 130.02
  4. Step 4: Simplify right side
    168.90x = 30,249.15
  5. Step 5: Solve for x
    x = 30,249.15/168.90
  6. Step 6: Final answer
    x = 179.10

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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.