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Finding the Fourth Proportional to 144.15, 198.59 and 125.61

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Solution

The fourth proportional to 144.15, 198.59 and 125.61 is: 173.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.15 : 198.59 = 125.61 : x
  2. Step 2: Convert to fraction form
    144.15/198.59 = 125.61/x
  3. Step 3: Cross multiply
    144.15x = 198.59 × 125.61
  4. Step 4: Simplify right side
    144.15x = 24,944.26
  5. Step 5: Solve for x
    x = 24,944.26/144.15
  6. Step 6: Final answer
    x = 173.04

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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.