Home / 203,546.15-305,320.01-85,134.43

Finding the Fourth Proportional to 203,546.15, 305,320.01 and 85,134.43

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Solution

The fourth proportional to 203,546.15, 305,320.01 and 85,134.43 is: 127,701.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,546.15 : 305,320.01 = 85,134.43 : x
  2. Step 2: Convert to fraction form
    203,546.15/305,320.01 = 85,134.43/x
  3. Step 3: Cross multiply
    203,546.15x = 305,320.01 × 85,134.43
  4. Step 4: Simplify right side
    203,546.15x = 25,993,245,018.94
  5. Step 5: Solve for x
    x = 25,993,245,018.94/203,546.15
  6. Step 6: Final answer
    x = 127,701.97

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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.