Home / 203,890.56-305,936.07-91,650.07

Finding the Fourth Proportional to 203,890.56, 305,936.07 and 91,650.07

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Solution

The fourth proportional to 203,890.56, 305,936.07 and 91,650.07 is: 137,520.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,890.56 : 305,936.07 = 91,650.07 : x
  2. Step 2: Convert to fraction form
    203,890.56/305,936.07 = 91,650.07/x
  3. Step 3: Cross multiply
    203,890.56x = 305,936.07 × 91,650.07
  4. Step 4: Simplify right side
    203,890.56x = 28,039,062,231.02
  5. Step 5: Solve for x
    x = 28,039,062,231.02/203,890.56
  6. Step 6: Final answer
    x = 137,520.16

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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.