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Finding the Fourth Proportional to 131.04, 196.32 and 118.89

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Solution

The fourth proportional to 131.04, 196.32 and 118.89 is: 178.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.04 : 196.32 = 118.89 : x
  2. Step 2: Convert to fraction form
    131.04/196.32 = 118.89/x
  3. Step 3: Cross multiply
    131.04x = 196.32 × 118.89
  4. Step 4: Simplify right side
    131.04x = 23,340.48
  5. Step 5: Solve for x
    x = 23,340.48/131.04
  6. Step 6: Final answer
    x = 178.12

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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.