Home / 203,546.28-305,320.20-85,134.56

Finding the Fourth Proportional to 203,546.28, 305,320.20 and 85,134.56

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Solution

The fourth proportional to 203,546.28, 305,320.20 and 85,134.56 is: 127,702.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,546.28 : 305,320.20 = 85,134.56 : x
  2. Step 2: Convert to fraction form
    203,546.28/305,320.20 = 85,134.56/x
  3. Step 3: Cross multiply
    203,546.28x = 305,320.20 × 85,134.56
  4. Step 4: Simplify right side
    203,546.28x = 25,993,299,359.51
  5. Step 5: Solve for x
    x = 25,993,299,359.51/203,546.28
  6. Step 6: Final answer
    x = 127,702.16

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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.