Home / 126,140.31-189,266.36-66,961.71

Finding the Fourth Proportional to 126,140.31, 189,266.36 and 66,961.71

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Solution

The fourth proportional to 126,140.31, 189,266.36 and 66,961.71 is: 100,472.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,140.31 : 189,266.36 = 66,961.71 : x
  2. Step 2: Convert to fraction form
    126,140.31/189,266.36 = 66,961.71/x
  3. Step 3: Cross multiply
    126,140.31x = 189,266.36 × 66,961.71
  4. Step 4: Simplify right side
    126,140.31x = 12,673,598,776.27
  5. Step 5: Solve for x
    x = 12,673,598,776.27/126,140.31
  6. Step 6: Final answer
    x = 100,472.23

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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.