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Finding the Fourth Proportional to 251,251.51, 376,935.56 and 82,765.80

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Solution

The fourth proportional to 251,251.51, 376,935.56 and 82,765.80 is: 124,167.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,251.51 : 376,935.56 = 82,765.80 : x
  2. Step 2: Convert to fraction form
    251,251.51/376,935.56 = 82,765.80/x
  3. Step 3: Cross multiply
    251,251.51x = 376,935.56 × 82,765.80
  4. Step 4: Simplify right side
    251,251.51x = 31,197,373,171.85
  5. Step 5: Solve for x
    x = 31,197,373,171.85/251,251.51
  6. Step 6: Final answer
    x = 124,167.90

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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.