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Finding the Fourth Proportional to 130.14, 194.31 and 109.44

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Solution

The fourth proportional to 130.14, 194.31 and 109.44 is: 163.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.14 : 194.31 = 109.44 : x
  2. Step 2: Convert to fraction form
    130.14/194.31 = 109.44/x
  3. Step 3: Cross multiply
    130.14x = 194.31 × 109.44
  4. Step 4: Simplify right side
    130.14x = 21,265.29
  5. Step 5: Solve for x
    x = 21,265.29/130.14
  6. Step 6: Final answer
    x = 163.40

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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.