Home / 126,279.20-189,505.20-70,119.20

Finding the Fourth Proportional to 126,279.20, 189,505.20 and 70,119.20

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Solution

The fourth proportional to 126,279.20, 189,505.20 and 70,119.20 is: 105,226.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,279.20 : 189,505.20 = 70,119.20 : x
  2. Step 2: Convert to fraction form
    126,279.20/189,505.20 = 70,119.20/x
  3. Step 3: Cross multiply
    126,279.20x = 189,505.20 × 70,119.20
  4. Step 4: Simplify right side
    126,279.20x = 13,287,953,019.84
  5. Step 5: Solve for x
    x = 13,287,953,019.84/126,279.20
  6. Step 6: Final answer
    x = 105,226.78

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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.