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Finding the Fourth Proportional to 131.35, 196.09 and 104.26

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Solution

The fourth proportional to 131.35, 196.09 and 104.26 is: 155.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.35 : 196.09 = 104.26 : x
  2. Step 2: Convert to fraction form
    131.35/196.09 = 104.26/x
  3. Step 3: Cross multiply
    131.35x = 196.09 × 104.26
  4. Step 4: Simplify right side
    131.35x = 20,444.34
  5. Step 5: Solve for x
    x = 20,444.34/131.35
  6. Step 6: Final answer
    x = 155.65

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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.