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Finding the Fourth Proportional to 171,110.40, 256,665.60 and 71,237.40

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Solution

The fourth proportional to 171,110.40, 256,665.60 and 71,237.40 is: 106,856.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,110.40 : 256,665.60 = 71,237.40 : x
  2. Step 2: Convert to fraction form
    171,110.40/256,665.60 = 71,237.40/x
  3. Step 3: Cross multiply
    171,110.40x = 256,665.60 × 71,237.40
  4. Step 4: Simplify right side
    171,110.40x = 18,284,190,013.44
  5. Step 5: Solve for x
    x = 18,284,190,013.44/171,110.40
  6. Step 6: Final answer
    x = 106,856.10

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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.