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Finding the Fourth Proportional to 124.24, 170.36 and 119.92

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Solution

The fourth proportional to 124.24, 170.36 and 119.92 is: 164.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.24 : 170.36 = 119.92 : x
  2. Step 2: Convert to fraction form
    124.24/170.36 = 119.92/x
  3. Step 3: Cross multiply
    124.24x = 170.36 × 119.92
  4. Step 4: Simplify right side
    124.24x = 20,429.57
  5. Step 5: Solve for x
    x = 20,429.57/124.24
  6. Step 6: Final answer
    x = 164.44

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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.