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Finding the Fourth Proportional to 135,620.92, 203,032.32 and 90,530.44

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Solution

The fourth proportional to 135,620.92, 203,032.32 and 90,530.44 is: 135,529.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,620.92 : 203,032.32 = 90,530.44 : x
  2. Step 2: Convert to fraction form
    135,620.92/203,032.32 = 90,530.44/x
  3. Step 3: Cross multiply
    135,620.92x = 203,032.32 × 90,530.44
  4. Step 4: Simplify right side
    135,620.92x = 18,380,603,796.01
  5. Step 5: Solve for x
    x = 18,380,603,796.01/135,620.92
  6. Step 6: Final answer
    x = 135,529.27

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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.