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Finding the Fourth Proportional to 100,680.30, 150,847.65 and 65,601.90

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Solution

The fourth proportional to 100,680.30, 150,847.65 and 65,601.90 is: 98,290.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,680.30 : 150,847.65 = 65,601.90 : x
  2. Step 2: Convert to fraction form
    100,680.30/150,847.65 = 65,601.90/x
  3. Step 3: Cross multiply
    100,680.30x = 150,847.65 × 65,601.90
  4. Step 4: Simplify right side
    100,680.30x = 9,895,892,450.54
  5. Step 5: Solve for x
    x = 9,895,892,450.54/100,680.30
  6. Step 6: Final answer
    x = 98,290.26

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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.