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Finding the Fourth Proportional to 108,708.70, 162,844.35 and 73,279.30

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Solution

The fourth proportional to 108,708.70, 162,844.35 and 73,279.30 is: 109,771.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,708.70 : 162,844.35 = 73,279.30 : x
  2. Step 2: Convert to fraction form
    108,708.70/162,844.35 = 73,279.30/x
  3. Step 3: Cross multiply
    108,708.70x = 162,844.35 × 73,279.30
  4. Step 4: Simplify right side
    108,708.70x = 11,933,119,976.96
  5. Step 5: Solve for x
    x = 11,933,119,976.96/108,708.70
  6. Step 6: Final answer
    x = 109,771.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.