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Finding the Fourth Proportional to 171,213.80, 256,867.94 and 71,420.92

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Solution

The fourth proportional to 171,213.80, 256,867.94 and 71,420.92 is: 107,151.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,213.80 : 256,867.94 = 71,420.92 : x
  2. Step 2: Convert to fraction form
    171,213.80/256,867.94 = 71,420.92/x
  3. Step 3: Cross multiply
    171,213.80x = 256,867.94 × 71,420.92
  4. Step 4: Simplify right side
    171,213.80x = 18,345,744,593.30
  5. Step 5: Solve for x
    x = 18,345,744,593.30/171,213.80
  6. Step 6: Final answer
    x = 107,151.09

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1.5x scale

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.