Home / 123,431.35-185,153.41-39,198.09

Finding the Fourth Proportional to 123,431.35, 185,153.41 and 39,198.09

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Solution

The fourth proportional to 123,431.35, 185,153.41 and 39,198.09 is: 58,799.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,431.35 : 185,153.41 = 39,198.09 : x
  2. Step 2: Convert to fraction form
    123,431.35/185,153.41 = 39,198.09/x
  3. Step 3: Cross multiply
    123,431.35x = 185,153.41 × 39,198.09
  4. Step 4: Simplify right side
    123,431.35x = 7,257,660,028.99
  5. Step 5: Solve for x
    x = 7,257,660,028.99/123,431.35
  6. Step 6: Final answer
    x = 58,799.16

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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.