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Finding the Fourth Proportional to 124.96, 173.26 and 120.40

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Solution

The fourth proportional to 124.96, 173.26 and 120.40 is: 166.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.96 : 173.26 = 120.40 : x
  2. Step 2: Convert to fraction form
    124.96/173.26 = 120.40/x
  3. Step 3: Cross multiply
    124.96x = 173.26 × 120.40
  4. Step 4: Simplify right side
    124.96x = 20,860.50
  5. Step 5: Solve for x
    x = 20,860.50/124.96
  6. Step 6: Final answer
    x = 166.94

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.