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Finding the Fourth Proportional to 120.88, 182.14 and 97.39

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Solution

The fourth proportional to 120.88, 182.14 and 97.39 is: 146.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120.88 : 182.14 = 97.39 : x
  2. Step 2: Convert to fraction form
    120.88/182.14 = 97.39/x
  3. Step 3: Cross multiply
    120.88x = 182.14 × 97.39
  4. Step 4: Simplify right side
    120.88x = 17,738.61
  5. Step 5: Solve for x
    x = 17,738.61/120.88
  6. Step 6: Final answer
    x = 146.75

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.