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Finding the Fourth Proportional to 124.88, 186.26 and 107.56

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Solution

The fourth proportional to 124.88, 186.26 and 107.56 is: 160.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.88 : 186.26 = 107.56 : x
  2. Step 2: Convert to fraction form
    124.88/186.26 = 107.56/x
  3. Step 3: Cross multiply
    124.88x = 186.26 × 107.56
  4. Step 4: Simplify right side
    124.88x = 20,034.13
  5. Step 5: Solve for x
    x = 20,034.13/124.88
  6. Step 6: Final answer
    x = 160.43

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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.