Home / 103,738.20-155,315.70-100,822.20

Finding the Fourth Proportional to 103,738.20, 155,315.70 and 100,822.20

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Solution

The fourth proportional to 103,738.20, 155,315.70 and 100,822.20 is: 150,949.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,738.20 : 155,315.70 = 100,822.20 : x
  2. Step 2: Convert to fraction form
    103,738.20/155,315.70 = 100,822.20/x
  3. Step 3: Cross multiply
    103,738.20x = 155,315.70 × 100,822.20
  4. Step 4: Simplify right side
    103,738.20x = 15,659,270,568.54
  5. Step 5: Solve for x
    x = 15,659,270,568.54/103,738.20
  6. Step 6: Final answer
    x = 150,949.90

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1.5x scale

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.