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Finding the Fourth Proportional to 201,839.80, 302,543.70 and 68,596.60

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Solution

The fourth proportional to 201,839.80, 302,543.70 and 68,596.60 is: 102,821.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,839.80 : 302,543.70 = 68,596.60 : x
  2. Step 2: Convert to fraction form
    201,839.80/302,543.70 = 68,596.60/x
  3. Step 3: Cross multiply
    201,839.80x = 302,543.70 × 68,596.60
  4. Step 4: Simplify right side
    201,839.80x = 20,753,469,171.42
  5. Step 5: Solve for x
    x = 20,753,469,171.42/201,839.80
  6. Step 6: Final answer
    x = 102,821.49

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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.