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Finding the Fourth Proportional to 103,616.12, 155,424.20 and 28,736.27

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Solution

The fourth proportional to 103,616.12, 155,424.20 and 28,736.27 is: 43,104.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,616.12 : 155,424.20 = 28,736.27 : x
  2. Step 2: Convert to fraction form
    103,616.12/155,424.20 = 28,736.27/x
  3. Step 3: Cross multiply
    103,616.12x = 155,424.20 × 28,736.27
  4. Step 4: Simplify right side
    103,616.12x = 4,466,311,775.73
  5. Step 5: Solve for x
    x = 4,466,311,775.73/103,616.12
  6. Step 6: Final answer
    x = 43,104.41

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1.5x scale

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.