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Finding the Fourth Proportional to 131.57, 196.86 and 124.63

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Solution

The fourth proportional to 131.57, 196.86 and 124.63 is: 186.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.57 : 196.86 = 124.63 : x
  2. Step 2: Convert to fraction form
    131.57/196.86 = 124.63/x
  3. Step 3: Cross multiply
    131.57x = 196.86 × 124.63
  4. Step 4: Simplify right side
    131.57x = 24,533.68
  5. Step 5: Solve for x
    x = 24,533.68/131.57
  6. Step 6: Final answer
    x = 186.47

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Why These Related Problems?

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