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Finding the Fourth Proportional to 104,642.88, 144,361.44 and 68,786.88

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Solution

The fourth proportional to 104,642.88, 144,361.44 and 68,786.88 is: 94,895.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,642.88 : 144,361.44 = 68,786.88 : x
  2. Step 2: Convert to fraction form
    104,642.88/144,361.44 = 68,786.88/x
  3. Step 3: Cross multiply
    104,642.88x = 144,361.44 × 68,786.88
  4. Step 4: Simplify right side
    104,642.88x = 9,930,173,049.91
  5. Step 5: Solve for x
    x = 9,930,173,049.91/104,642.88
  6. Step 6: Final answer
    x = 94,895.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.