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Finding the Fourth Proportional to 104,687.84, 144,617.19 and 81,118.46

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Solution

The fourth proportional to 104,687.84, 144,617.19 and 81,118.46 is: 112,058.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,687.84 : 144,617.19 = 81,118.46 : x
  2. Step 2: Convert to fraction form
    104,687.84/144,617.19 = 81,118.46/x
  3. Step 3: Cross multiply
    104,687.84x = 144,617.19 × 81,118.46
  4. Step 4: Simplify right side
    104,687.84x = 11,731,123,742.33
  5. Step 5: Solve for x
    x = 11,731,123,742.33/104,687.84
  6. Step 6: Final answer
    x = 112,058.13

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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.