Home / 103,840.32-155,743.44-28,965.54

Finding the Fourth Proportional to 103,840.32, 155,743.44 and 28,965.54

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Solution

The fourth proportional to 103,840.32, 155,743.44 and 28,965.54 is: 43,443.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,840.32 : 155,743.44 = 28,965.54 : x
  2. Step 2: Convert to fraction form
    103,840.32/155,743.44 = 28,965.54/x
  3. Step 3: Cross multiply
    103,840.32x = 155,743.44 × 28,965.54
  4. Step 4: Simplify right side
    103,840.32x = 4,511,192,841.06
  5. Step 5: Solve for x
    x = 4,511,192,841.06/103,840.32
  6. Step 6: Final answer
    x = 43,443.56

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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.