Home / 126,033.20-189,049.80-102,705.20

Finding the Fourth Proportional to 126,033.20, 189,049.80 and 102,705.20

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Solution

The fourth proportional to 126,033.20, 189,049.80 and 102,705.20 is: 154,057.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,033.20 : 189,049.80 = 102,705.20 : x
  2. Step 2: Convert to fraction form
    126,033.20/189,049.80 = 102,705.20/x
  3. Step 3: Cross multiply
    126,033.20x = 189,049.80 × 102,705.20
  4. Step 4: Simplify right side
    126,033.20x = 19,416,397,518.96
  5. Step 5: Solve for x
    x = 19,416,397,518.96/126,033.20
  6. Step 6: Final answer
    x = 154,057.80

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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.