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Finding the Fourth Proportional to 135,850.20, 203,928.90 and 80,477.40

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Solution

The fourth proportional to 135,850.20, 203,928.90 and 80,477.40 is: 120,807.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,850.20 : 203,928.90 = 80,477.40 : x
  2. Step 2: Convert to fraction form
    135,850.20/203,928.90 = 80,477.40/x
  3. Step 3: Cross multiply
    135,850.20x = 203,928.90 × 80,477.40
  4. Step 4: Simplify right side
    135,850.20x = 16,411,667,656.86
  5. Step 5: Solve for x
    x = 16,411,667,656.86/135,850.20
  6. Step 6: Final answer
    x = 120,807.09

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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.