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Finding the Fourth Proportional to 133,269.64, 199,805.46 and 80,666.80

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Solution

The fourth proportional to 133,269.64, 199,805.46 and 80,666.80 is: 120,940.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,269.64 : 199,805.46 = 80,666.80 : x
  2. Step 2: Convert to fraction form
    133,269.64/199,805.46 = 80,666.80/x
  3. Step 3: Cross multiply
    133,269.64x = 199,805.46 × 80,666.80
  4. Step 4: Simplify right side
    133,269.64x = 16,117,667,080.73
  5. Step 5: Solve for x
    x = 16,117,667,080.73/133,269.64
  6. Step 6: Final answer
    x = 120,940.28

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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.