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Finding the Fourth Proportional to 143,625.92, 215,453.57 and 54,954

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Solution

The fourth proportional to 143,625.92, 215,453.57 and 54,954 is: 82,436.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,625.92 : 215,453.57 = 54,954 : x
  2. Step 2: Convert to fraction form
    143,625.92/215,453.57 = 54,954/x
  3. Step 3: Cross multiply
    143,625.92x = 215,453.57 × 54,954
  4. Step 4: Simplify right side
    143,625.92x = 11,840,035,211.01
  5. Step 5: Solve for x
    x = 11,840,035,211.01/143,625.92
  6. Step 6: Final answer
    x = 82,436.62

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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.