Home / 130,528.20-195,792.30-80,445.90

Finding the Fourth Proportional to 130,528.20, 195,792.30 and 80,445.90

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Solution

The fourth proportional to 130,528.20, 195,792.30 and 80,445.90 is: 120,668.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,528.20 : 195,792.30 = 80,445.90 : x
  2. Step 2: Convert to fraction form
    130,528.20/195,792.30 = 80,445.90/x
  3. Step 3: Cross multiply
    130,528.20x = 195,792.30 × 80,445.90
  4. Step 4: Simplify right side
    130,528.20x = 15,750,687,786.57
  5. Step 5: Solve for x
    x = 15,750,687,786.57/130,528.20
  6. Step 6: Final answer
    x = 120,668.85

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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.