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Finding the Fourth Proportional to 131.63, 197.66 and 124.79

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Solution

The fourth proportional to 131.63, 197.66 and 124.79 is: 187.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.63 : 197.66 = 124.79 : x
  2. Step 2: Convert to fraction form
    131.63/197.66 = 124.79/x
  3. Step 3: Cross multiply
    131.63x = 197.66 × 124.79
  4. Step 4: Simplify right side
    131.63x = 24,665.32
  5. Step 5: Solve for x
    x = 24,665.32/131.63
  6. Step 6: Final answer
    x = 187.39

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.