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Finding the Fourth Proportional to 131.56, 180.41 and 124.84

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Solution

The fourth proportional to 131.56, 180.41 and 124.84 is: 171.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.56 : 180.41 = 124.84 : x
  2. Step 2: Convert to fraction form
    131.56/180.41 = 124.84/x
  3. Step 3: Cross multiply
    131.56x = 180.41 × 124.84
  4. Step 4: Simplify right side
    131.56x = 22,522.38
  5. Step 5: Solve for x
    x = 22,522.38/131.56
  6. Step 6: Final answer
    x = 171.19

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.