Home / 126,054.20-189,081.30-90,624.80

Finding the Fourth Proportional to 126,054.20, 189,081.30 and 90,624.80

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Solution

The fourth proportional to 126,054.20, 189,081.30 and 90,624.80 is: 135,937.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,054.20 : 189,081.30 = 90,624.80 : x
  2. Step 2: Convert to fraction form
    126,054.20/189,081.30 = 90,624.80/x
  3. Step 3: Cross multiply
    126,054.20x = 189,081.30 × 90,624.80
  4. Step 4: Simplify right side
    126,054.20x = 17,135,454,996.24
  5. Step 5: Solve for x
    x = 17,135,454,996.24/126,054.20
  6. Step 6: Final answer
    x = 135,937.20

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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.