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Finding the Fourth Proportional to 133,099.80, 199,649.70 and 66,550.20

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Solution

The fourth proportional to 133,099.80, 199,649.70 and 66,550.20 is: 99,825.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,099.80 : 199,649.70 = 66,550.20 : x
  2. Step 2: Convert to fraction form
    133,099.80/199,649.70 = 66,550.20/x
  3. Step 3: Cross multiply
    133,099.80x = 199,649.70 × 66,550.20
  4. Step 4: Simplify right side
    133,099.80x = 13,286,727,464.94
  5. Step 5: Solve for x
    x = 13,286,727,464.94/133,099.80
  6. Step 6: Final answer
    x = 99,825.30

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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.