Home / 101,028.25-139,346.89-85,815.37

Finding the Fourth Proportional to 101,028.25, 139,346.89 and 85,815.37

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Solution

The fourth proportional to 101,028.25, 139,346.89 and 85,815.37 is: 118,363.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,028.25 : 139,346.89 = 85,815.37 : x
  2. Step 2: Convert to fraction form
    101,028.25/139,346.89 = 85,815.37/x
  3. Step 3: Cross multiply
    101,028.25x = 139,346.89 × 85,815.37
  4. Step 4: Simplify right side
    101,028.25x = 11,958,104,923.70
  5. Step 5: Solve for x
    x = 11,958,104,923.70/101,028.25
  6. Step 6: Final answer
    x = 118,363.97

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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.