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Finding the Fourth Proportional to 200,028.26, 300,042.30 and 80,139.62

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Solution

The fourth proportional to 200,028.26, 300,042.30 and 80,139.62 is: 120,209.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,028.26 : 300,042.30 = 80,139.62 : x
  2. Step 2: Convert to fraction form
    200,028.26/300,042.30 = 80,139.62/x
  3. Step 3: Cross multiply
    200,028.26x = 300,042.30 × 80,139.62
  4. Step 4: Simplify right side
    200,028.26x = 24,045,275,905.93
  5. Step 5: Solve for x
    x = 24,045,275,905.93/200,028.26
  6. Step 6: Final answer
    x = 120,209.39

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1.5x scale

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.