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Finding the Fourth Proportional to 130.88, 194.68 and 124.40

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Solution

The fourth proportional to 130.88, 194.68 and 124.40 is: 185.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.88 : 194.68 = 124.40 : x
  2. Step 2: Convert to fraction form
    130.88/194.68 = 124.40/x
  3. Step 3: Cross multiply
    130.88x = 194.68 × 124.40
  4. Step 4: Simplify right side
    130.88x = 24,218.19
  5. Step 5: Solve for x
    x = 24,218.19/130.88
  6. Step 6: Final answer
    x = 185.04

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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.