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Finding the Fourth Proportional to 125.28, 173.16 and 115.56

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Solution

The fourth proportional to 125.28, 173.16 and 115.56 is: 159.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.28 : 173.16 = 115.56 : x
  2. Step 2: Convert to fraction form
    125.28/173.16 = 115.56/x
  3. Step 3: Cross multiply
    125.28x = 173.16 × 115.56
  4. Step 4: Simplify right side
    125.28x = 20,010.37
  5. Step 5: Solve for x
    x = 20,010.37/125.28
  6. Step 6: Final answer
    x = 159.73

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.