Home / 101,185.11-139,634.64-55,863.03

Finding the Fourth Proportional to 101,185.11, 139,634.64 and 55,863.03

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Solution

The fourth proportional to 101,185.11, 139,634.64 and 55,863.03 is: 77,090.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,185.11 : 139,634.64 = 55,863.03 : x
  2. Step 2: Convert to fraction form
    101,185.11/139,634.64 = 55,863.03/x
  3. Step 3: Cross multiply
    101,185.11x = 139,634.64 × 55,863.03
  4. Step 4: Simplify right side
    101,185.11x = 7,800,414,083.36
  5. Step 5: Solve for x
    x = 7,800,414,083.36/101,185.11
  6. Step 6: Final answer
    x = 77,090.53

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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.