Home / 126,200.80-189,301.20-90,771.40

Finding the Fourth Proportional to 126,200.80, 189,301.20 and 90,771.40

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Solution

The fourth proportional to 126,200.80, 189,301.20 and 90,771.40 is: 136,157.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,200.80 : 189,301.20 = 90,771.40 : x
  2. Step 2: Convert to fraction form
    126,200.80/189,301.20 = 90,771.40/x
  3. Step 3: Cross multiply
    126,200.80x = 189,301.20 × 90,771.40
  4. Step 4: Simplify right side
    126,200.80x = 17,183,134,945.68
  5. Step 5: Solve for x
    x = 17,183,134,945.68/126,200.80
  6. Step 6: Final answer
    x = 136,157.10

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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.