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Finding the Fourth Proportional to 173.42, 239.25 and 121.04

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Solution

The fourth proportional to 173.42, 239.25 and 121.04 is: 167.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.42 : 239.25 = 121.04 : x
  2. Step 2: Convert to fraction form
    173.42/239.25 = 121.04/x
  3. Step 3: Cross multiply
    173.42x = 239.25 × 121.04
  4. Step 4: Simplify right side
    173.42x = 28,960.32
  5. Step 5: Solve for x
    x = 28,960.32/173.42
  6. Step 6: Final answer
    x = 167.00

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Why These Related Problems?

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