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Finding the Fourth Proportional to 143,251.78, 214,877.67 and 54,484.78

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Solution

The fourth proportional to 143,251.78, 214,877.67 and 54,484.78 is: 81,727.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,251.78 : 214,877.67 = 54,484.78 : x
  2. Step 2: Convert to fraction form
    143,251.78/214,877.67 = 54,484.78/x
  3. Step 3: Cross multiply
    143,251.78x = 214,877.67 × 54,484.78
  4. Step 4: Simplify right side
    143,251.78x = 11,707,562,576.86
  5. Step 5: Solve for x
    x = 11,707,562,576.86/143,251.78
  6. Step 6: Final answer
    x = 81,727.17

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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.