Home / 123,189.22-170,074.38-80,821.72

Finding the Fourth Proportional to 123,189.22, 170,074.38 and 80,821.72

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Solution

The fourth proportional to 123,189.22, 170,074.38 and 80,821.72 is: 111,582.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,189.22 : 170,074.38 = 80,821.72 : x
  2. Step 2: Convert to fraction form
    123,189.22/170,074.38 = 80,821.72/x
  3. Step 3: Cross multiply
    123,189.22x = 170,074.38 × 80,821.72
  4. Step 4: Simplify right side
    123,189.22x = 13,745,703,919.53
  5. Step 5: Solve for x
    x = 13,745,703,919.53/123,189.22
  6. Step 6: Final answer
    x = 111,582.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.