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Finding the Fourth Proportional to 101,179.38, 139,620.38 and 55,850.09

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Solution

The fourth proportional to 101,179.38, 139,620.38 and 55,850.09 is: 77,069.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,179.38 : 139,620.38 = 55,850.09 : x
  2. Step 2: Convert to fraction form
    101,179.38/139,620.38 = 55,850.09/x
  3. Step 3: Cross multiply
    101,179.38x = 139,620.38 × 55,850.09
  4. Step 4: Simplify right side
    101,179.38x = 7,797,809,811.48
  5. Step 5: Solve for x
    x = 7,797,809,811.48/101,179.38
  6. Step 6: Final answer
    x = 77,069.16

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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.