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Finding the Fourth Proportional to 127,954.80, 191,687.40 and 68,770.80

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Solution

The fourth proportional to 127,954.80, 191,687.40 and 68,770.80 is: 103,024.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,954.80 : 191,687.40 = 68,770.80 : x
  2. Step 2: Convert to fraction form
    127,954.80/191,687.40 = 68,770.80/x
  3. Step 3: Cross multiply
    127,954.80x = 191,687.40 × 68,770.80
  4. Step 4: Simplify right side
    127,954.80x = 13,182,495,847.92
  5. Step 5: Solve for x
    x = 13,182,495,847.92/127,954.80
  6. Step 6: Final answer
    x = 103,024.63

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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.