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Finding the Fourth Proportional to 119.54, 164.97 and 86.33

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Solution

The fourth proportional to 119.54, 164.97 and 86.33 is: 119.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.54 : 164.97 = 86.33 : x
  2. Step 2: Convert to fraction form
    119.54/164.97 = 86.33/x
  3. Step 3: Cross multiply
    119.54x = 164.97 × 86.33
  4. Step 4: Simplify right side
    119.54x = 14,241.86
  5. Step 5: Solve for x
    x = 14,241.86/119.54
  6. Step 6: Final answer
    x = 119.14

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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.