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Finding the Fourth Proportional to 104,285.88, 143,838.05 and 68,462.82

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Solution

The fourth proportional to 104,285.88, 143,838.05 and 68,462.82 is: 94,428.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,285.88 : 143,838.05 = 68,462.82 : x
  2. Step 2: Convert to fraction form
    104,285.88/143,838.05 = 68,462.82/x
  3. Step 3: Cross multiply
    104,285.88x = 143,838.05 × 68,462.82
  4. Step 4: Simplify right side
    104,285.88x = 9,847,558,183.99
  5. Step 5: Solve for x
    x = 9,847,558,183.99/104,285.88
  6. Step 6: Final answer
    x = 94,428.49

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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.