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Finding the Fourth Proportional to 126.48, 173.51 and 123.10

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Solution

The fourth proportional to 126.48, 173.51 and 123.10 is: 168.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.48 : 173.51 = 123.10 : x
  2. Step 2: Convert to fraction form
    126.48/173.51 = 123.10/x
  3. Step 3: Cross multiply
    126.48x = 173.51 × 123.10
  4. Step 4: Simplify right side
    126.48x = 21,358.47
  5. Step 5: Solve for x
    x = 21,358.47/126.48
  6. Step 6: Final answer
    x = 168.87

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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.