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Finding the Fourth Proportional to 171,056.28, 256,579.14 and 71,213.94

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Solution

The fourth proportional to 171,056.28, 256,579.14 and 71,213.94 is: 106,818.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,056.28 : 256,579.14 = 71,213.94 : x
  2. Step 2: Convert to fraction form
    171,056.28/256,579.14 = 71,213.94/x
  3. Step 3: Cross multiply
    171,056.28x = 256,579.14 × 71,213.94
  4. Step 4: Simplify right side
    171,056.28x = 18,272,011,481.21
  5. Step 5: Solve for x
    x = 18,272,011,481.21/171,056.28
  6. Step 6: Final answer
    x = 106,818.71

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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.