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Finding the Fourth Proportional to 143,696.97, 215,545.46 and 43,857.69

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Solution

The fourth proportional to 143,696.97, 215,545.46 and 43,857.69 is: 65,786.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,696.97 : 215,545.46 = 43,857.69 : x
  2. Step 2: Convert to fraction form
    143,696.97/215,545.46 = 43,857.69/x
  3. Step 3: Cross multiply
    143,696.97x = 215,545.46 × 43,857.69
  4. Step 4: Simplify right side
    143,696.97x = 9,453,324,938.00
  5. Step 5: Solve for x
    x = 9,453,324,938.00/143,696.97
  6. Step 6: Final answer
    x = 65,786.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.