Home / 103,640.44-155,443.26-28,768.19

Finding the Fourth Proportional to 103,640.44, 155,443.26 and 28,768.19

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Solution

The fourth proportional to 103,640.44, 155,443.26 and 28,768.19 is: 43,147.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.44 : 155,443.26 = 28,768.19 : x
  2. Step 2: Convert to fraction form
    103,640.44/155,443.26 = 28,768.19/x
  3. Step 3: Cross multiply
    103,640.44x = 155,443.26 × 28,768.19
  4. Step 4: Simplify right side
    103,640.44x = 4,471,821,237.90
  5. Step 5: Solve for x
    x = 4,471,821,237.90/103,640.44
  6. Step 6: Final answer
    x = 43,147.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.