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Finding the Fourth Proportional to 135,622.60, 203,433.90 and 109,378.60

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Solution

The fourth proportional to 135,622.60, 203,433.90 and 109,378.60 is: 164,067.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,622.60 : 203,433.90 = 109,378.60 : x
  2. Step 2: Convert to fraction form
    135,622.60/203,433.90 = 109,378.60/x
  3. Step 3: Cross multiply
    135,622.60x = 203,433.90 × 109,378.60
  4. Step 4: Simplify right side
    135,622.60x = 22,251,315,174.54
  5. Step 5: Solve for x
    x = 22,251,315,174.54/135,622.60
  6. Step 6: Final answer
    x = 164,067.90

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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.