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Finding the Fourth Proportional to 131.44, 197.94 and 109.98

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Solution

The fourth proportional to 131.44, 197.94 and 109.98 is: 165.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.44 : 197.94 = 109.98 : x
  2. Step 2: Convert to fraction form
    131.44/197.94 = 109.98/x
  3. Step 3: Cross multiply
    131.44x = 197.94 × 109.98
  4. Step 4: Simplify right side
    131.44x = 21,769.44
  5. Step 5: Solve for x
    x = 21,769.44/131.44
  6. Step 6: Final answer
    x = 165.62

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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.