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Finding the Fourth Proportional to 131.94, 197.65 and 124.45

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Solution

The fourth proportional to 131.94, 197.65 and 124.45 is: 186.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.94 : 197.65 = 124.45 : x
  2. Step 2: Convert to fraction form
    131.94/197.65 = 124.45/x
  3. Step 3: Cross multiply
    131.94x = 197.65 × 124.45
  4. Step 4: Simplify right side
    131.94x = 24,595.93
  5. Step 5: Solve for x
    x = 24,595.93/131.94
  6. Step 6: Final answer
    x = 186.42

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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.