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Finding the Fourth Proportional to 126.23, 188.19 and 123.03

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Solution

The fourth proportional to 126.23, 188.19 and 123.03 is: 183.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.23 : 188.19 = 123.03 : x
  2. Step 2: Convert to fraction form
    126.23/188.19 = 123.03/x
  3. Step 3: Cross multiply
    126.23x = 188.19 × 123.03
  4. Step 4: Simplify right side
    126.23x = 23,153.02
  5. Step 5: Solve for x
    x = 23,153.02/126.23
  6. Step 6: Final answer
    x = 183.43

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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.