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Finding the Fourth Proportional to 130.29, 179.63 and 93.39

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Solution

The fourth proportional to 130.29, 179.63 and 93.39 is: 128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.29 : 179.63 = 93.39 : x
  2. Step 2: Convert to fraction form
    130.29/179.63 = 93.39/x
  3. Step 3: Cross multiply
    130.29x = 179.63 × 93.39
  4. Step 4: Simplify right side
    130.29x = 16,775.65
  5. Step 5: Solve for x
    x = 16,775.65/130.29
  6. Step 6: Final answer
    x = 128.76

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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.