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Finding the Fourth Proportional to 131.26, 195.48 and 123.40

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Solution

The fourth proportional to 131.26, 195.48 and 123.40 is: 183.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.26 : 195.48 = 123.40 : x
  2. Step 2: Convert to fraction form
    131.26/195.48 = 123.40/x
  3. Step 3: Cross multiply
    131.26x = 195.48 × 123.40
  4. Step 4: Simplify right side
    131.26x = 24,121.41
  5. Step 5: Solve for x
    x = 24,121.41/131.26
  6. Step 6: Final answer
    x = 183.77

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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.