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Finding the Fourth Proportional to 133,636.80, 200,396.40 and 40,120.80

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Solution

The fourth proportional to 133,636.80, 200,396.40 and 40,120.80 is: 60,163.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,636.80 : 200,396.40 = 40,120.80 : x
  2. Step 2: Convert to fraction form
    133,636.80/200,396.40 = 40,120.80/x
  3. Step 3: Cross multiply
    133,636.80x = 200,396.40 × 40,120.80
  4. Step 4: Simplify right side
    133,636.80x = 8,040,063,885.12
  5. Step 5: Solve for x
    x = 8,040,063,885.12/133,636.80
  6. Step 6: Final answer
    x = 60,163.55

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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.