Home / 137,757.36-206,438.73-78,470.62

Finding the Fourth Proportional to 137,757.36, 206,438.73 and 78,470.62

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Solution

The fourth proportional to 137,757.36, 206,438.73 and 78,470.62 is: 117,593.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,757.36 : 206,438.73 = 78,470.62 : x
  2. Step 2: Convert to fraction form
    137,757.36/206,438.73 = 78,470.62/x
  3. Step 3: Cross multiply
    137,757.36x = 206,438.73 × 78,470.62
  4. Step 4: Simplify right side
    137,757.36x = 16,199,375,135.11
  5. Step 5: Solve for x
    x = 16,199,375,135.11/137,757.36
  6. Step 6: Final answer
    x = 117,593.54

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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.