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Finding the Fourth Proportional to 168,751.80, 252,836.10 and 79,813.80

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Solution

The fourth proportional to 168,751.80, 252,836.10 and 79,813.80 is: 119,582.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,751.80 : 252,836.10 = 79,813.80 : x
  2. Step 2: Convert to fraction form
    168,751.80/252,836.10 = 79,813.80/x
  3. Step 3: Cross multiply
    168,751.80x = 252,836.10 × 79,813.80
  4. Step 4: Simplify right side
    168,751.80x = 20,179,809,918.18
  5. Step 5: Solve for x
    x = 20,179,809,918.18/168,751.80
  6. Step 6: Final answer
    x = 119,582.78

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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.