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Finding the Fourth Proportional to 171,003.88, 256,440.12 and 71,211.16

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Solution

The fourth proportional to 171,003.88, 256,440.12 and 71,211.16 is: 106,789.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,003.88 : 256,440.12 = 71,211.16 : x
  2. Step 2: Convert to fraction form
    171,003.88/256,440.12 = 71,211.16/x
  3. Step 3: Cross multiply
    171,003.88x = 256,440.12 × 71,211.16
  4. Step 4: Simplify right side
    171,003.88x = 18,261,398,415.74
  5. Step 5: Solve for x
    x = 18,261,398,415.74/171,003.88
  6. Step 6: Final answer
    x = 106,789.38

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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.