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Finding the Fourth Proportional to 131.37, 198.03 and 123.94

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Solution

The fourth proportional to 131.37, 198.03 and 123.94 is: 186.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.37 : 198.03 = 123.94 : x
  2. Step 2: Convert to fraction form
    131.37/198.03 = 123.94/x
  3. Step 3: Cross multiply
    131.37x = 198.03 × 123.94
  4. Step 4: Simplify right side
    131.37x = 24,543.84
  5. Step 5: Solve for x
    x = 24,543.84/131.37
  6. Step 6: Final answer
    x = 186.83

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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.