Home / 130,422.20-195,633.30-68,111.80

Finding the Fourth Proportional to 130,422.20, 195,633.30 and 68,111.80

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Solution

The fourth proportional to 130,422.20, 195,633.30 and 68,111.80 is: 102,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,422.20 : 195,633.30 = 68,111.80 : x
  2. Step 2: Convert to fraction form
    130,422.20/195,633.30 = 68,111.80/x
  3. Step 3: Cross multiply
    130,422.20x = 195,633.30 × 68,111.80
  4. Step 4: Simplify right side
    130,422.20x = 13,324,936,202.94
  5. Step 5: Solve for x
    x = 13,324,936,202.94/130,422.20
  6. Step 6: Final answer
    x = 102,167.70

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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.