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Finding the Fourth Proportional to 119.31, 178.72 and 96.36

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Solution

The fourth proportional to 119.31, 178.72 and 96.36 is: 144.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.31 : 178.72 = 96.36 : x
  2. Step 2: Convert to fraction form
    119.31/178.72 = 96.36/x
  3. Step 3: Cross multiply
    119.31x = 178.72 × 96.36
  4. Step 4: Simplify right side
    119.31x = 17,221.22
  5. Step 5: Solve for x
    x = 17,221.22/119.31
  6. Step 6: Final answer
    x = 144.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.