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Finding the Fourth Proportional to 133,396.40, 199,755.92 and 80,054.80

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Solution

The fourth proportional to 133,396.40, 199,755.92 and 80,054.80 is: 119,878.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,396.40 : 199,755.92 = 80,054.80 : x
  2. Step 2: Convert to fraction form
    133,396.40/199,755.92 = 80,054.80/x
  3. Step 3: Cross multiply
    133,396.40x = 199,755.92 × 80,054.80
  4. Step 4: Simplify right side
    133,396.40x = 15,991,420,224.42
  5. Step 5: Solve for x
    x = 15,991,420,224.42/133,396.40
  6. Step 6: Final answer
    x = 119,878.95

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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.