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Finding the Fourth Proportional to 125.59, 187.49 and 111.92

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Solution

The fourth proportional to 125.59, 187.49 and 111.92 is: 167.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.59 : 187.49 = 111.92 : x
  2. Step 2: Convert to fraction form
    125.59/187.49 = 111.92/x
  3. Step 3: Cross multiply
    125.59x = 187.49 × 111.92
  4. Step 4: Simplify right side
    125.59x = 20,983.88
  5. Step 5: Solve for x
    x = 20,983.88/125.59
  6. Step 6: Final answer
    x = 167.08

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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.