Home / 103,816.20-155,505.60-84,133.20

Finding the Fourth Proportional to 103,816.20, 155,505.60 and 84,133.20

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Solution

The fourth proportional to 103,816.20, 155,505.60 and 84,133.20 is: 126,022.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,816.20 : 155,505.60 = 84,133.20 : x
  2. Step 2: Convert to fraction form
    103,816.20/155,505.60 = 84,133.20/x
  3. Step 3: Cross multiply
    103,816.20x = 155,505.60 × 84,133.20
  4. Step 4: Simplify right side
    103,816.20x = 13,083,183,745.92
  5. Step 5: Solve for x
    x = 13,083,183,745.92/103,816.20
  6. Step 6: Final answer
    x = 126,022.56

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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.