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Finding the Fourth Proportional to 131.23, 196.94 and 119.89

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Solution

The fourth proportional to 131.23, 196.94 and 119.89 is: 179.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.23 : 196.94 = 119.89 : x
  2. Step 2: Convert to fraction form
    131.23/196.94 = 119.89/x
  3. Step 3: Cross multiply
    131.23x = 196.94 × 119.89
  4. Step 4: Simplify right side
    131.23x = 23,611.14
  5. Step 5: Solve for x
    x = 23,611.14/131.23
  6. Step 6: Final answer
    x = 179.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.