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Finding the Fourth Proportional to 131.19, 195.74 and 124.35

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Solution

The fourth proportional to 131.19, 195.74 and 124.35 is: 185.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.19 : 195.74 = 124.35 : x
  2. Step 2: Convert to fraction form
    131.19/195.74 = 124.35/x
  3. Step 3: Cross multiply
    131.19x = 195.74 × 124.35
  4. Step 4: Simplify right side
    131.19x = 24,339.65
  5. Step 5: Solve for x
    x = 24,339.65/131.19
  6. Step 6: Final answer
    x = 185.53

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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.