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Finding the Fourth Proportional to 130.72, 179.29 and 116.14

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Solution

The fourth proportional to 130.72, 179.29 and 116.14 is: 159.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.72 : 179.29 = 116.14 : x
  2. Step 2: Convert to fraction form
    130.72/179.29 = 116.14/x
  3. Step 3: Cross multiply
    130.72x = 179.29 × 116.14
  4. Step 4: Simplify right side
    130.72x = 20,822.74
  5. Step 5: Solve for x
    x = 20,822.74/130.72
  6. Step 6: Final answer
    x = 159.29

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.