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Finding the Fourth Proportional to 104,364.49, 143,934.08 and 80,223.88

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Solution

The fourth proportional to 104,364.49, 143,934.08 and 80,223.88 is: 110,640.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,364.49 : 143,934.08 = 80,223.88 : x
  2. Step 2: Convert to fraction form
    104,364.49/143,934.08 = 80,223.88/x
  3. Step 3: Cross multiply
    104,364.49x = 143,934.08 × 80,223.88
  4. Step 4: Simplify right side
    104,364.49x = 11,546,950,185.97
  5. Step 5: Solve for x
    x = 11,546,950,185.97/104,364.49
  6. Step 6: Final answer
    x = 110,640.61

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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.