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Finding the Fourth Proportional to 171,019.88, 256,585.14 and 82,261.79

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Solution

The fourth proportional to 171,019.88, 256,585.14 and 82,261.79 is: 123,419.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,019.88 : 256,585.14 = 82,261.79 : x
  2. Step 2: Convert to fraction form
    171,019.88/256,585.14 = 82,261.79/x
  3. Step 3: Cross multiply
    171,019.88x = 256,585.14 × 82,261.79
  4. Step 4: Simplify right side
    171,019.88x = 21,107,151,209.57
  5. Step 5: Solve for x
    x = 21,107,151,209.57/171,019.88
  6. Step 6: Final answer
    x = 123,419.29

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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.