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Finding the Fourth Proportional to 143,553.54, 215,344.65 and 54,881.64

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Solution

The fourth proportional to 143,553.54, 215,344.65 and 54,881.64 is: 82,327.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,553.54 : 215,344.65 = 54,881.64 : x
  2. Step 2: Convert to fraction form
    143,553.54/215,344.65 = 54,881.64/x
  3. Step 3: Cross multiply
    143,553.54x = 215,344.65 × 54,881.64
  4. Step 4: Simplify right side
    143,553.54x = 11,818,467,557.23
  5. Step 5: Solve for x
    x = 11,818,467,557.23/143,553.54
  6. Step 6: Final answer
    x = 82,327.94

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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.