Home / 103,618.30-155,427.43-28,738.44

Finding the Fourth Proportional to 103,618.30, 155,427.43 and 28,738.44

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Solution

The fourth proportional to 103,618.30, 155,427.43 and 28,738.44 is: 43,107.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,618.30 : 155,427.43 = 28,738.44 : x
  2. Step 2: Convert to fraction form
    103,618.30/155,427.43 = 28,738.44/x
  3. Step 3: Cross multiply
    103,618.30x = 155,427.43 × 28,738.44
  4. Step 4: Simplify right side
    103,618.30x = 4,466,741,871.41
  5. Step 5: Solve for x
    x = 4,466,741,871.41/103,618.30
  6. Step 6: Final answer
    x = 43,107.65

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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.