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Finding the Fourth Proportional to 120.36, 166.50 and 116.04

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Solution

The fourth proportional to 120.36, 166.50 and 116.04 is: 160.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    120.36 : 166.50 = 116.04 : x
  2. Step 2: Convert to fraction form
    120.36/166.50 = 116.04/x
  3. Step 3: Cross multiply
    120.36x = 166.50 × 116.04
  4. Step 4: Simplify right side
    120.36x = 19,320.66
  5. Step 5: Solve for x
    x = 19,320.66/120.36
  6. Step 6: Final answer
    x = 160.52

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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.