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Finding the Fourth Proportional to 200,245.03, 300,412.55 and 67,121.89

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Solution

The fourth proportional to 200,245.03, 300,412.55 and 67,121.89 is: 100,697.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,245.03 : 300,412.55 = 67,121.89 : x
  2. Step 2: Convert to fraction form
    200,245.03/300,412.55 = 67,121.89/x
  3. Step 3: Cross multiply
    200,245.03x = 300,412.55 × 67,121.89
  4. Step 4: Simplify right side
    200,245.03x = 20,164,257,552.49
  5. Step 5: Solve for x
    x = 20,164,257,552.49/200,245.03
  6. Step 6: Final answer
    x = 100,697.92

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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.