Home / 203,564.80-280,921.11-112,926.70

Finding the Fourth Proportional to 203,564.80, 280,921.11 and 112,926.70

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Solution

The fourth proportional to 203,564.80, 280,921.11 and 112,926.70 is: 155,839.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,564.80 : 280,921.11 = 112,926.70 : x
  2. Step 2: Convert to fraction form
    203,564.80/280,921.11 = 112,926.70/x
  3. Step 3: Cross multiply
    203,564.80x = 280,921.11 × 112,926.70
  4. Step 4: Simplify right side
    203,564.80x = 31,723,493,912.64
  5. Step 5: Solve for x
    x = 31,723,493,912.64/203,564.80
  6. Step 6: Final answer
    x = 155,839.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.