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Finding the Fourth Proportional to 104,309.87, 143,968.04 and 68,498.96

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Solution

The fourth proportional to 104,309.87, 143,968.04 and 68,498.96 is: 94,541.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,309.87 : 143,968.04 = 68,498.96 : x
  2. Step 2: Convert to fraction form
    104,309.87/143,968.04 = 68,498.96/x
  3. Step 3: Cross multiply
    104,309.87x = 143,968.04 × 68,498.96
  4. Step 4: Simplify right side
    104,309.87x = 9,861,659,950.90
  5. Step 5: Solve for x
    x = 9,861,659,950.90/104,309.87
  6. Step 6: Final answer
    x = 94,541.97

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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.