Home / 115,938.80-173,908.20-108,105.20

Finding the Fourth Proportional to 115,938.80, 173,908.20 and 108,105.20

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Solution

The fourth proportional to 115,938.80, 173,908.20 and 108,105.20 is: 162,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,938.80 : 173,908.20 = 108,105.20 : x
  2. Step 2: Convert to fraction form
    115,938.80/173,908.20 = 108,105.20/x
  3. Step 3: Cross multiply
    115,938.80x = 173,908.20 × 108,105.20
  4. Step 4: Simplify right side
    115,938.80x = 18,800,380,742.64
  5. Step 5: Solve for x
    x = 18,800,380,742.64/115,938.80
  6. Step 6: Final answer
    x = 162,157.80

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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.