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Finding the Fourth Proportional to 195.76, 270.12 and 130.36

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Solution

The fourth proportional to 195.76, 270.12 and 130.36 is: 179.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    195.76 : 270.12 = 130.36 : x
  2. Step 2: Convert to fraction form
    195.76/270.12 = 130.36/x
  3. Step 3: Cross multiply
    195.76x = 270.12 × 130.36
  4. Step 4: Simplify right side
    195.76x = 35,212.84
  5. Step 5: Solve for x
    x = 35,212.84/195.76
  6. Step 6: Final answer
    x = 179.88

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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.