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Finding the Fourth Proportional to 123,922.80, 171,028.20 and 73,622

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Solution

The fourth proportional to 123,922.80, 171,028.20 and 73,622 is: 101,607.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,922.80 : 171,028.20 = 73,622 : x
  2. Step 2: Convert to fraction form
    123,922.80/171,028.20 = 73,622/x
  3. Step 3: Cross multiply
    123,922.80x = 171,028.20 × 73,622
  4. Step 4: Simplify right side
    123,922.80x = 12,591,438,140.40
  5. Step 5: Solve for x
    x = 12,591,438,140.40/123,922.80
  6. Step 6: Final answer
    x = 101,607.11

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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.