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Finding the Fourth Proportional to 123,808.87, 185,739.94 and 38,418.02

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Solution

The fourth proportional to 123,808.87, 185,739.94 and 38,418.02 is: 57,635.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,808.87 : 185,739.94 = 38,418.02 : x
  2. Step 2: Convert to fraction form
    123,808.87/185,739.94 = 38,418.02/x
  3. Step 3: Cross multiply
    123,808.87x = 185,739.94 × 38,418.02
  4. Step 4: Simplify right side
    123,808.87x = 7,135,760,729.72
  5. Step 5: Solve for x
    x = 7,135,760,729.72/123,808.87
  6. Step 6: Final answer
    x = 57,635.29

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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.