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Finding the Fourth Proportional to 130.47, 179.96 and 95.61

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Solution

The fourth proportional to 130.47, 179.96 and 95.61 is: 131.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.47 : 179.96 = 95.61 : x
  2. Step 2: Convert to fraction form
    130.47/179.96 = 95.61/x
  3. Step 3: Cross multiply
    130.47x = 179.96 × 95.61
  4. Step 4: Simplify right side
    130.47x = 17,205.98
  5. Step 5: Solve for x
    x = 17,205.98/130.47
  6. Step 6: Final answer
    x = 131.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.