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Finding the Fourth Proportional to 108,067.60, 162,004.20 and 68,604.40

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Solution

The fourth proportional to 108,067.60, 162,004.20 and 68,604.40 is: 102,844.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,067.60 : 162,004.20 = 68,604.40 : x
  2. Step 2: Convert to fraction form
    108,067.60/162,004.20 = 68,604.40/x
  3. Step 3: Cross multiply
    108,067.60x = 162,004.20 × 68,604.40
  4. Step 4: Simplify right side
    108,067.60x = 11,114,200,938.48
  5. Step 5: Solve for x
    x = 11,114,200,938.48/108,067.60
  6. Step 6: Final answer
    x = 102,844.89

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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.