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Finding the Fourth Proportional to 171,167.06, 256,811.40 and 76,388.60

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Solution

The fourth proportional to 171,167.06, 256,811.40 and 76,388.60 is: 114,610.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,167.06 : 256,811.40 = 76,388.60 : x
  2. Step 2: Convert to fraction form
    171,167.06/256,811.40 = 76,388.60/x
  3. Step 3: Cross multiply
    171,167.06x = 256,811.40 × 76,388.60
  4. Step 4: Simplify right side
    171,167.06x = 19,617,463,310.04
  5. Step 5: Solve for x
    x = 19,617,463,310.04/171,167.06
  6. Step 6: Final answer
    x = 114,610.04

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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.