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Finding the Fourth Proportional to 169.10, 232.20 and 136.10

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Solution

The fourth proportional to 169.10, 232.20 and 136.10 is: 186.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.10 : 232.20 = 136.10 : x
  2. Step 2: Convert to fraction form
    169.10/232.20 = 136.10/x
  3. Step 3: Cross multiply
    169.10x = 232.20 × 136.10
  4. Step 4: Simplify right side
    169.10x = 31,602.42
  5. Step 5: Solve for x
    x = 31,602.42/169.10
  6. Step 6: Final answer
    x = 186.89

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.