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Finding the Fourth Proportional to 131.44, 195.72 and 129.99

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Solution

The fourth proportional to 131.44, 195.72 and 129.99 is: 193.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.44 : 195.72 = 129.99 : x
  2. Step 2: Convert to fraction form
    131.44/195.72 = 129.99/x
  3. Step 3: Cross multiply
    131.44x = 195.72 × 129.99
  4. Step 4: Simplify right side
    131.44x = 25,441.64
  5. Step 5: Solve for x
    x = 25,441.64/131.44
  6. Step 6: Final answer
    x = 193.56

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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.