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Finding the Fourth Proportional to 110,279.80, 165,419.70 and 68,193.40

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Solution

The fourth proportional to 110,279.80, 165,419.70 and 68,193.40 is: 102,290.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,279.80 : 165,419.70 = 68,193.40 : x
  2. Step 2: Convert to fraction form
    110,279.80/165,419.70 = 68,193.40/x
  3. Step 3: Cross multiply
    110,279.80x = 165,419.70 × 68,193.40
  4. Step 4: Simplify right side
    110,279.80x = 11,280,531,769.98
  5. Step 5: Solve for x
    x = 11,280,531,769.98/110,279.80
  6. Step 6: Final answer
    x = 102,290.10

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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.