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Finding the Fourth Proportional to 131.08, 197.52 and 124.90

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Solution

The fourth proportional to 131.08, 197.52 and 124.90 is: 188.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.08 : 197.52 = 124.90 : x
  2. Step 2: Convert to fraction form
    131.08/197.52 = 124.90/x
  3. Step 3: Cross multiply
    131.08x = 197.52 × 124.90
  4. Step 4: Simplify right side
    131.08x = 24,670.25
  5. Step 5: Solve for x
    x = 24,670.25/131.08
  6. Step 6: Final answer
    x = 188.21

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.