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Finding the Fourth Proportional to 104,115.66, 143,620.98 and 65,863.44

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Solution

The fourth proportional to 104,115.66, 143,620.98 and 65,863.44 is: 90,854.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,115.66 : 143,620.98 = 65,863.44 : x
  2. Step 2: Convert to fraction form
    104,115.66/143,620.98 = 65,863.44/x
  3. Step 3: Cross multiply
    104,115.66x = 143,620.98 × 65,863.44
  4. Step 4: Simplify right side
    104,115.66x = 9,459,371,798.97
  5. Step 5: Solve for x
    x = 9,459,371,798.97/104,115.66
  6. Step 6: Final answer
    x = 90,854.46

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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.