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Finding the Fourth Proportional to 130.36, 179.60 and 93.46

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Solution

The fourth proportional to 130.36, 179.60 and 93.46 is: 128.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.36 : 179.60 = 93.46 : x
  2. Step 2: Convert to fraction form
    130.36/179.60 = 93.46/x
  3. Step 3: Cross multiply
    130.36x = 179.60 × 93.46
  4. Step 4: Simplify right side
    130.36x = 16,785.42
  5. Step 5: Solve for x
    x = 16,785.42/130.36
  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.