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Finding the Fourth Proportional to 119.79, 165.48 and 96.45

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Solution

The fourth proportional to 119.79, 165.48 and 96.45 is: 133.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.79 : 165.48 = 96.45 : x
  2. Step 2: Convert to fraction form
    119.79/165.48 = 96.45/x
  3. Step 3: Cross multiply
    119.79x = 165.48 × 96.45
  4. Step 4: Simplify right side
    119.79x = 15,960.55
  5. Step 5: Solve for x
    x = 15,960.55/119.79
  6. Step 6: Final answer
    x = 133.24

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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.