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Finding the Fourth Proportional to 133,379.80, 200,069.70 and 80,891.80

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Solution

The fourth proportional to 133,379.80, 200,069.70 and 80,891.80 is: 121,337.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,379.80 : 200,069.70 = 80,891.80 : x
  2. Step 2: Convert to fraction form
    133,379.80/200,069.70 = 80,891.80/x
  3. Step 3: Cross multiply
    133,379.80x = 200,069.70 × 80,891.80
  4. Step 4: Simplify right side
    133,379.80x = 16,183,998,158.46
  5. Step 5: Solve for x
    x = 16,183,998,158.46/133,379.80
  6. Step 6: Final answer
    x = 121,337.70

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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.