Home / 225,735.09-311,546.16-139,721.66

Finding the Fourth Proportional to 225,735.09, 311,546.16 and 139,721.66

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Solution

The fourth proportional to 225,735.09, 311,546.16 and 139,721.66 is: 192,835.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,735.09 : 311,546.16 = 139,721.66 : x
  2. Step 2: Convert to fraction form
    225,735.09/311,546.16 = 139,721.66/x
  3. Step 3: Cross multiply
    225,735.09x = 311,546.16 × 139,721.66
  4. Step 4: Simplify right side
    225,735.09x = 43,529,747,420.69
  5. Step 5: Solve for x
    x = 43,529,747,420.69/225,735.09
  6. Step 6: Final answer
    x = 192,835.54

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1.5x scale

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.