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Finding the Fourth Proportional to 133,940.80, 200,911.20 and 40,434.40

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Solution

The fourth proportional to 133,940.80, 200,911.20 and 40,434.40 is: 60,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,940.80 : 200,911.20 = 40,434.40 : x
  2. Step 2: Convert to fraction form
    133,940.80/200,911.20 = 40,434.40/x
  3. Step 3: Cross multiply
    133,940.80x = 200,911.20 × 40,434.40
  4. Step 4: Simplify right side
    133,940.80x = 8,123,723,825.28
  5. Step 5: Solve for x
    x = 8,123,723,825.28/133,940.80
  6. Step 6: Final answer
    x = 60,651.60

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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.