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Finding the Fourth Proportional to 130.95, 196.46 and 92.51

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Solution

The fourth proportional to 130.95, 196.46 and 92.51 is: 138.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.95 : 196.46 = 92.51 : x
  2. Step 2: Convert to fraction form
    130.95/196.46 = 92.51/x
  3. Step 3: Cross multiply
    130.95x = 196.46 × 92.51
  4. Step 4: Simplify right side
    130.95x = 18,173.88
  5. Step 5: Solve for x
    x = 18,173.88/130.95
  6. Step 6: Final answer
    x = 138.78

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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.