Home / 103,786.23-155,110.71-75,765.30

Finding the Fourth Proportional to 103,786.23, 155,110.71 and 75,765.30

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Solution

The fourth proportional to 103,786.23, 155,110.71 and 75,765.30 is: 113,232.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,786.23 : 155,110.71 = 75,765.30 : x
  2. Step 2: Convert to fraction form
    103,786.23/155,110.71 = 75,765.30/x
  3. Step 3: Cross multiply
    103,786.23x = 155,110.71 × 75,765.30
  4. Step 4: Simplify right side
    103,786.23x = 11,752,008,610.58
  5. Step 5: Solve for x
    x = 11,752,008,610.58/103,786.23
  6. Step 6: Final answer
    x = 113,232.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.