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Finding the Fourth Proportional to 130.60, 179.94 and 112.36

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Solution

The fourth proportional to 130.60, 179.94 and 112.36 is: 154.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130.60 : 179.94 = 112.36 : x
  2. Step 2: Convert to fraction form
    130.60/179.94 = 112.36/x
  3. Step 3: Cross multiply
    130.60x = 179.94 × 112.36
  4. Step 4: Simplify right side
    130.60x = 20,218.06
  5. Step 5: Solve for x
    x = 20,218.06/130.60
  6. Step 6: Final answer
    x = 154.81

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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.