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Finding the Fourth Proportional to 131.83, 196.93 and 126.36

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Solution

The fourth proportional to 131.83, 196.93 and 126.36 is: 188.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.83 : 196.93 = 126.36 : x
  2. Step 2: Convert to fraction form
    131.83/196.93 = 126.36/x
  3. Step 3: Cross multiply
    131.83x = 196.93 × 126.36
  4. Step 4: Simplify right side
    131.83x = 24,884.23
  5. Step 5: Solve for x
    x = 24,884.23/131.83
  6. Step 6: Final answer
    x = 188.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.