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Finding the Fourth Proportional to 100,719.60, 150,949.80 and 61,234.80

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Solution

The fourth proportional to 100,719.60, 150,949.80 and 61,234.80 is: 91,773.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,719.60 : 150,949.80 = 61,234.80 : x
  2. Step 2: Convert to fraction form
    100,719.60/150,949.80 = 61,234.80/x
  3. Step 3: Cross multiply
    100,719.60x = 150,949.80 × 61,234.80
  4. Step 4: Simplify right side
    100,719.60x = 9,243,380,813.04
  5. Step 5: Solve for x
    x = 9,243,380,813.04/100,719.60
  6. Step 6: Final answer
    x = 91,773.41

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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.