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Finding the Fourth Proportional to 99,350.20, 149,025.30 and 67,857.40

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Solution

The fourth proportional to 99,350.20, 149,025.30 and 67,857.40 is: 101,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,350.20 : 149,025.30 = 67,857.40 : x
  2. Step 2: Convert to fraction form
    99,350.20/149,025.30 = 67,857.40/x
  3. Step 3: Cross multiply
    99,350.20x = 149,025.30 × 67,857.40
  4. Step 4: Simplify right side
    99,350.20x = 10,112,469,392.22
  5. Step 5: Solve for x
    x = 10,112,469,392.22/99,350.20
  6. Step 6: Final answer
    x = 101,786.10

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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.