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Finding the Fourth Proportional to 130.06, 194.49 and 97.18

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Solution

The fourth proportional to 130.06, 194.49 and 97.18 is: 145.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.06 : 194.49 = 97.18 : x
  2. Step 2: Convert to fraction form
    130.06/194.49 = 97.18/x
  3. Step 3: Cross multiply
    130.06x = 194.49 × 97.18
  4. Step 4: Simplify right side
    130.06x = 18,900.05
  5. Step 5: Solve for x
    x = 18,900.05/130.06
  6. Step 6: Final answer
    x = 145.32

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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.