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Finding the Fourth Proportional to 104,287.88, 143,840.80 and 68,464.82

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Solution

The fourth proportional to 104,287.88, 143,840.80 and 68,464.82 is: 94,431.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,287.88 : 143,840.80 = 68,464.82 : x
  2. Step 2: Convert to fraction form
    104,287.88/143,840.80 = 68,464.82/x
  3. Step 3: Cross multiply
    104,287.88x = 143,840.80 × 68,464.82
  4. Step 4: Simplify right side
    104,287.88x = 9,848,034,480.66
  5. Step 5: Solve for x
    x = 9,848,034,480.66/104,287.88
  6. Step 6: Final answer
    x = 94,431.25

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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.