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Finding the Fourth Proportional to 167.64, 231.03 and 130.74

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Solution

The fourth proportional to 167.64, 231.03 and 130.74 is: 180.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.64 : 231.03 = 130.74 : x
  2. Step 2: Convert to fraction form
    167.64/231.03 = 130.74/x
  3. Step 3: Cross multiply
    167.64x = 231.03 × 130.74
  4. Step 4: Simplify right side
    167.64x = 30,204.86
  5. Step 5: Solve for x
    x = 30,204.86/167.64
  6. Step 6: Final answer
    x = 180.18

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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.