Home / 138,129.96-206,809.14-74,723.34

Finding the Fourth Proportional to 138,129.96, 206,809.14 and 74,723.34

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Solution

The fourth proportional to 138,129.96, 206,809.14 and 74,723.34 is: 111,876.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,129.96 : 206,809.14 = 74,723.34 : x
  2. Step 2: Convert to fraction form
    138,129.96/206,809.14 = 74,723.34/x
  3. Step 3: Cross multiply
    138,129.96x = 206,809.14 × 74,723.34
  4. Step 4: Simplify right side
    138,129.96x = 15,453,469,683.33
  5. Step 5: Solve for x
    x = 15,453,469,683.33/138,129.96
  6. Step 6: Final answer
    x = 111,876.31

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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.