Home / 123,629.44-170,632.84-80,662.20

Finding the Fourth Proportional to 123,629.44, 170,632.84 and 80,662.20

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Solution

The fourth proportional to 123,629.44, 170,632.84 and 80,662.20 is: 111,329.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,629.44 : 170,632.84 = 80,662.20 : x
  2. Step 2: Convert to fraction form
    123,629.44/170,632.84 = 80,662.20/x
  3. Step 3: Cross multiply
    123,629.44x = 170,632.84 × 80,662.20
  4. Step 4: Simplify right side
    123,629.44x = 13,763,620,266.65
  5. Step 5: Solve for x
    x = 13,763,620,266.65/123,629.44
  6. Step 6: Final answer
    x = 111,329.63

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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.