Home / 130,104.20-195,156.30-80,021.90

Finding the Fourth Proportional to 130,104.20, 195,156.30 and 80,021.90

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Solution

The fourth proportional to 130,104.20, 195,156.30 and 80,021.90 is: 120,032.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,104.20 : 195,156.30 = 80,021.90 : x
  2. Step 2: Convert to fraction form
    130,104.20/195,156.30 = 80,021.90/x
  3. Step 3: Cross multiply
    130,104.20x = 195,156.30 × 80,021.90
  4. Step 4: Simplify right side
    130,104.20x = 15,616,777,922.97
  5. Step 5: Solve for x
    x = 15,616,777,922.97/130,104.20
  6. Step 6: Final answer
    x = 120,032.85

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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.