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Finding the Fourth Proportional to 131.36, 195.52 and 129.41

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Solution

The fourth proportional to 131.36, 195.52 and 129.41 is: 192.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.36 : 195.52 = 129.41 : x
  2. Step 2: Convert to fraction form
    131.36/195.52 = 129.41/x
  3. Step 3: Cross multiply
    131.36x = 195.52 × 129.41
  4. Step 4: Simplify right side
    131.36x = 25,301.73
  5. Step 5: Solve for x
    x = 25,301.73/131.36
  6. Step 6: Final answer
    x = 192.62

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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.