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Finding the Fourth Proportional to 123,028.97, 168,672.67 and 120,786.95

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Solution

The fourth proportional to 123,028.97, 168,672.67 and 120,786.95 is: 165,598.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,028.97 : 168,672.67 = 120,786.95 : x
  2. Step 2: Convert to fraction form
    123,028.97/168,672.67 = 120,786.95/x
  3. Step 3: Cross multiply
    123,028.97x = 168,672.67 × 120,786.95
  4. Step 4: Simplify right side
    123,028.97x = 20,373,457,477.37
  5. Step 5: Solve for x
    x = 20,373,457,477.37/123,028.97
  6. Step 6: Final answer
    x = 165,598.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.