Home / 103,786.17-155,110.62-75,765.23

Finding the Fourth Proportional to 103,786.17, 155,110.62 and 75,765.23

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Solution

The fourth proportional to 103,786.17, 155,110.62 and 75,765.23 is: 113,232.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,786.17 : 155,110.62 = 75,765.23 : x
  2. Step 2: Convert to fraction form
    103,786.17/155,110.62 = 75,765.23/x
  3. Step 3: Cross multiply
    103,786.17x = 155,110.62 × 75,765.23
  4. Step 4: Simplify right side
    103,786.17x = 11,751,991,793.50
  5. Step 5: Solve for x
    x = 11,751,991,793.50/103,786.17
  6. Step 6: Final answer
    x = 113,232.74

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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.