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Finding the Fourth Proportional to 131.25, 195.87 and 125.95

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Solution

The fourth proportional to 131.25, 195.87 and 125.95 is: 187.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.25 : 195.87 = 125.95 : x
  2. Step 2: Convert to fraction form
    131.25/195.87 = 125.95/x
  3. Step 3: Cross multiply
    131.25x = 195.87 × 125.95
  4. Step 4: Simplify right side
    131.25x = 24,668.85
  5. Step 5: Solve for x
    x = 24,668.85/131.25
  6. Step 6: Final answer
    x = 187.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.