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Finding the Fourth Proportional to 125.16, 186.53 and 124.56

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Solution

The fourth proportional to 125.16, 186.53 and 124.56 is: 185.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.16 : 186.53 = 124.56 : x
  2. Step 2: Convert to fraction form
    125.16/186.53 = 124.56/x
  3. Step 3: Cross multiply
    125.16x = 186.53 × 124.56
  4. Step 4: Simplify right side
    125.16x = 23,234.18
  5. Step 5: Solve for x
    x = 23,234.18/125.16
  6. Step 6: Final answer
    x = 185.64

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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.