Home / 99,781.20-149,844.60-96,670.80

Finding the Fourth Proportional to 99,781.20, 149,844.60 and 96,670.80

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Solution

The fourth proportional to 99,781.20, 149,844.60 and 96,670.80 is: 145,173.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,781.20 : 149,844.60 = 96,670.80 : x
  2. Step 2: Convert to fraction form
    99,781.20/149,844.60 = 96,670.80/x
  3. Step 3: Cross multiply
    99,781.20x = 149,844.60 × 96,670.80
  4. Step 4: Simplify right side
    99,781.20x = 14,485,597,357.68
  5. Step 5: Solve for x
    x = 14,485,597,357.68/99,781.20
  6. Step 6: Final answer
    x = 145,173.61

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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.