Home / 126,299.25-189,301.25-70,112.49

Finding the Fourth Proportional to 126,299.25, 189,301.25 and 70,112.49

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Solution

The fourth proportional to 126,299.25, 189,301.25 and 70,112.49 is: 105,086.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,299.25 : 189,301.25 = 70,112.49 : x
  2. Step 2: Convert to fraction form
    126,299.25/189,301.25 = 70,112.49/x
  3. Step 3: Cross multiply
    126,299.25x = 189,301.25 × 70,112.49
  4. Step 4: Simplify right side
    126,299.25x = 13,272,381,463.01
  5. Step 5: Solve for x
    x = 13,272,381,463.01/126,299.25
  6. Step 6: Final answer
    x = 105,086.78

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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.