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Finding the Fourth Proportional to 110,805.40, 165,974.10 and 73,383.40

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Solution

The fourth proportional to 110,805.40, 165,974.10 and 73,383.40 is: 109,920.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,805.40 : 165,974.10 = 73,383.40 : x
  2. Step 2: Convert to fraction form
    110,805.40/165,974.10 = 73,383.40/x
  3. Step 3: Cross multiply
    110,805.40x = 165,974.10 × 73,383.40
  4. Step 4: Simplify right side
    110,805.40x = 12,179,743,769.94
  5. Step 5: Solve for x
    x = 12,179,743,769.94/110,805.40
  6. Step 6: Final answer
    x = 109,920.13

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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.