Home / 100,936.51-139,292.39-58,519.64

Finding the Fourth Proportional to 100,936.51, 139,292.39 and 58,519.64

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Solution

The fourth proportional to 100,936.51, 139,292.39 and 58,519.64 is: 80,757.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,936.51 : 139,292.39 = 58,519.64 : x
  2. Step 2: Convert to fraction form
    100,936.51/139,292.39 = 58,519.64/x
  3. Step 3: Cross multiply
    100,936.51x = 139,292.39 × 58,519.64
  4. Step 4: Simplify right side
    100,936.51x = 8,151,340,517.54
  5. Step 5: Solve for x
    x = 8,151,340,517.54/100,936.51
  6. Step 6: Final answer
    x = 80,757.11

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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.