Home / 127,974.88-191,977.92-68,729.20

Finding the Fourth Proportional to 127,974.88, 191,977.92 and 68,729.20

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Solution

The fourth proportional to 127,974.88, 191,977.92 and 68,729.20 is: 103,102.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,974.88 : 191,977.92 = 68,729.20 : x
  2. Step 2: Convert to fraction form
    127,974.88/191,977.92 = 68,729.20/x
  3. Step 3: Cross multiply
    127,974.88x = 191,977.92 × 68,729.20
  4. Step 4: Simplify right side
    127,974.88x = 13,194,488,859.26
  5. Step 5: Solve for x
    x = 13,194,488,859.26/127,974.88
  6. Step 6: Final answer
    x = 103,102.18

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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.