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Finding the Fourth Proportional to 248,007, 372,010.68 and 81,795

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Solution

The fourth proportional to 248,007, 372,010.68 and 81,795 is: 122,692.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,007 : 372,010.68 = 81,795 : x
  2. Step 2: Convert to fraction form
    248,007/372,010.68 = 81,795/x
  3. Step 3: Cross multiply
    248,007x = 372,010.68 × 81,795
  4. Step 4: Simplify right side
    248,007x = 30,428,613,570.60
  5. Step 5: Solve for x
    x = 30,428,613,570.60/248,007
  6. Step 6: Final answer
    x = 122,692.56

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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.