Home / 137,939.72-206,905.43-38,105.88

Finding the Fourth Proportional to 137,939.72, 206,905.43 and 38,105.88

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Solution

The fourth proportional to 137,939.72, 206,905.43 and 38,105.88 is: 57,157.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,939.72 : 206,905.43 = 38,105.88 : x
  2. Step 2: Convert to fraction form
    137,939.72/206,905.43 = 38,105.88/x
  3. Step 3: Cross multiply
    137,939.72x = 206,905.43 × 38,105.88
  4. Step 4: Simplify right side
    137,939.72x = 7,884,313,296.40
  5. Step 5: Solve for x
    x = 7,884,313,296.40/137,939.72
  6. Step 6: Final answer
    x = 57,157.67

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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.