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Finding the Fourth Proportional to 127,326.60, 190,932.30 and 57,169.80

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Solution

The fourth proportional to 127,326.60, 190,932.30 and 57,169.80 is: 85,728.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,326.60 : 190,932.30 = 57,169.80 : x
  2. Step 2: Convert to fraction form
    127,326.60/190,932.30 = 57,169.80/x
  3. Step 3: Cross multiply
    127,326.60x = 190,932.30 × 57,169.80
  4. Step 4: Simplify right side
    127,326.60x = 10,915,561,404.54
  5. Step 5: Solve for x
    x = 10,915,561,404.54/127,326.60
  6. Step 6: Final answer
    x = 85,728.84

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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.