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Finding the Fourth Proportional to 203,957.02, 305,830.49 and 91,540.87

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Solution

The fourth proportional to 203,957.02, 305,830.49 and 91,540.87 is: 137,264.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,957.02 : 305,830.49 = 91,540.87 : x
  2. Step 2: Convert to fraction form
    203,957.02/305,830.49 = 91,540.87/x
  3. Step 3: Cross multiply
    203,957.02x = 305,830.49 × 91,540.87
  4. Step 4: Simplify right side
    203,957.02x = 27,995,987,904.85
  5. Step 5: Solve for x
    x = 27,995,987,904.85/203,957.02
  6. Step 6: Final answer
    x = 137,264.15

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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.