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Finding the Fourth Proportional to 171,113.72, 256,736.18 and 71,247.09

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Solution

The fourth proportional to 171,113.72, 256,736.18 and 71,247.09 is: 106,897.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,113.72 : 256,736.18 = 71,247.09 : x
  2. Step 2: Convert to fraction form
    171,113.72/256,736.18 = 71,247.09/x
  3. Step 3: Cross multiply
    171,113.72x = 256,736.18 × 71,247.09
  4. Step 4: Simplify right side
    171,113.72x = 18,291,706,863.59
  5. Step 5: Solve for x
    x = 18,291,706,863.59/171,113.72
  6. Step 6: Final answer
    x = 106,897.96

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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.