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Finding the Fourth Proportional to 123,491.88, 185,218.43 and 39,240.95

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Solution

The fourth proportional to 123,491.88, 185,218.43 and 39,240.95 is: 58,855.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,491.88 : 185,218.43 = 39,240.95 : x
  2. Step 2: Convert to fraction form
    123,491.88/185,218.43 = 39,240.95/x
  3. Step 3: Cross multiply
    123,491.88x = 185,218.43 × 39,240.95
  4. Step 4: Simplify right side
    123,491.88x = 7,268,146,028.41
  5. Step 5: Solve for x
    x = 7,268,146,028.41/123,491.88
  6. Step 6: Final answer
    x = 58,855.25

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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.