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Finding the Fourth Proportional to 127,952.80, 191,684.40 and 68,768.80

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Solution

The fourth proportional to 127,952.80, 191,684.40 and 68,768.80 is: 103,021.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,952.80 : 191,684.40 = 68,768.80 : x
  2. Step 2: Convert to fraction form
    127,952.80/191,684.40 = 68,768.80/x
  3. Step 3: Cross multiply
    127,952.80x = 191,684.40 × 68,768.80
  4. Step 4: Simplify right side
    127,952.80x = 13,181,906,166.72
  5. Step 5: Solve for x
    x = 13,181,906,166.72/127,952.80
  6. Step 6: Final answer
    x = 103,021.63

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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.