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Finding the Fourth Proportional to 100,092.06, 150,211.80 and 80,605.80

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Solution

The fourth proportional to 100,092.06, 150,211.80 and 80,605.80 is: 120,968.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,092.06 : 150,211.80 = 80,605.80 : x
  2. Step 2: Convert to fraction form
    100,092.06/150,211.80 = 80,605.80/x
  3. Step 3: Cross multiply
    100,092.06x = 150,211.80 × 80,605.80
  4. Step 4: Simplify right side
    100,092.06x = 12,107,942,308.44
  5. Step 5: Solve for x
    x = 12,107,942,308.44/100,092.06
  6. Step 6: Final answer
    x = 120,968.06

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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.