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Finding the Fourth Proportional to 125.88, 173.22 and 105.09

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Solution

The fourth proportional to 125.88, 173.22 and 105.09 is: 144.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.88 : 173.22 = 105.09 : x
  2. Step 2: Convert to fraction form
    125.88/173.22 = 105.09/x
  3. Step 3: Cross multiply
    125.88x = 173.22 × 105.09
  4. Step 4: Simplify right side
    125.88x = 18,203.30
  5. Step 5: Solve for x
    x = 18,203.30/125.88
  6. Step 6: Final answer
    x = 144.61

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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.