Home / 126,912.72-175,129.92-70,322.88

Finding the Fourth Proportional to 126,912.72, 175,129.92 and 70,322.88

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Solution

The fourth proportional to 126,912.72, 175,129.92 and 70,322.88 is: 97,040.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,912.72 : 175,129.92 = 70,322.88 : x
  2. Step 2: Convert to fraction form
    126,912.72/175,129.92 = 70,322.88/x
  3. Step 3: Cross multiply
    126,912.72x = 175,129.92 × 70,322.88
  4. Step 4: Simplify right side
    126,912.72x = 12,315,640,348.57
  5. Step 5: Solve for x
    x = 12,315,640,348.57/126,912.72
  6. Step 6: Final answer
    x = 97,040.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.