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Finding the Fourth Proportional to 201,108.30, 301,771.80 and 82,791.60

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Solution

The fourth proportional to 201,108.30, 301,771.80 and 82,791.60 is: 124,232.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,108.30 : 301,771.80 = 82,791.60 : x
  2. Step 2: Convert to fraction form
    201,108.30/301,771.80 = 82,791.60/x
  3. Step 3: Cross multiply
    201,108.30x = 301,771.80 × 82,791.60
  4. Step 4: Simplify right side
    201,108.30x = 24,984,170,156.88
  5. Step 5: Solve for x
    x = 24,984,170,156.88/201,108.30
  6. Step 6: Final answer
    x = 124,232.42

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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.