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Finding the Fourth Proportional to 135,847.20, 203,924.40 and 80,474.40

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Solution

The fourth proportional to 135,847.20, 203,924.40 and 80,474.40 is: 120,802.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,847.20 : 203,924.40 = 80,474.40 : x
  2. Step 2: Convert to fraction form
    135,847.20/203,924.40 = 80,474.40/x
  3. Step 3: Cross multiply
    135,847.20x = 203,924.40 × 80,474.40
  4. Step 4: Simplify right side
    135,847.20x = 16,410,693,735.36
  5. Step 5: Solve for x
    x = 16,410,693,735.36/135,847.20
  6. Step 6: Final answer
    x = 120,802.59

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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.