Home / 123,633.28-171,797.12-122,348.80

Finding the Fourth Proportional to 123,633.28, 171,797.12 and 122,348.80

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Solution

The fourth proportional to 123,633.28, 171,797.12 and 122,348.80 is: 170,012.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,633.28 : 171,797.12 = 122,348.80 : x
  2. Step 2: Convert to fraction form
    123,633.28/171,797.12 = 122,348.80/x
  3. Step 3: Cross multiply
    123,633.28x = 171,797.12 × 122,348.80
  4. Step 4: Simplify right side
    123,633.28x = 21,019,171,475.46
  5. Step 5: Solve for x
    x = 21,019,171,475.46/123,633.28
  6. Step 6: Final answer
    x = 170,012.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.