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Finding the Fourth Proportional to 126.74, 174.74 and 124.04

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Solution

The fourth proportional to 126.74, 174.74 and 124.04 is: 171.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    126.74 : 174.74 = 124.04 : x
  2. Step 2: Convert to fraction form
    126.74/174.74 = 124.04/x
  3. Step 3: Cross multiply
    126.74x = 174.74 × 124.04
  4. Step 4: Simplify right side
    126.74x = 21,674.75
  5. Step 5: Solve for x
    x = 21,674.75/126.74
  6. Step 6: Final answer
    x = 171.02

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.