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Finding the Fourth Proportional to 124.29, 170.28 and 119.43

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Solution

The fourth proportional to 124.29, 170.28 and 119.43 is: 163.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.29 : 170.28 = 119.43 : x
  2. Step 2: Convert to fraction form
    124.29/170.28 = 119.43/x
  3. Step 3: Cross multiply
    124.29x = 170.28 × 119.43
  4. Step 4: Simplify right side
    124.29x = 20,336.54
  5. Step 5: Solve for x
    x = 20,336.54/124.29
  6. Step 6: Final answer
    x = 163.62

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.