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Finding the Fourth Proportional to 132.12, 197.40 and 104.52

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Solution

The fourth proportional to 132.12, 197.40 and 104.52 is: 156.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.12 : 197.40 = 104.52 : x
  2. Step 2: Convert to fraction form
    132.12/197.40 = 104.52/x
  3. Step 3: Cross multiply
    132.12x = 197.40 × 104.52
  4. Step 4: Simplify right side
    132.12x = 20,632.25
  5. Step 5: Solve for x
    x = 20,632.25/132.12
  6. Step 6: Final answer
    x = 156.16

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.