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Finding the Fourth Proportional to 201,871.80, 302,808.78 and 68,766.12

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Solution

The fourth proportional to 201,871.80, 302,808.78 and 68,766.12 is: 103,149.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,871.80 : 302,808.78 = 68,766.12 : x
  2. Step 2: Convert to fraction form
    201,871.80/302,808.78 = 68,766.12/x
  3. Step 3: Cross multiply
    201,871.80x = 302,808.78 × 68,766.12
  4. Step 4: Simplify right side
    201,871.80x = 20,822,984,902.53
  5. Step 5: Solve for x
    x = 20,822,984,902.53/201,871.80
  6. Step 6: Final answer
    x = 103,149.55

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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.