Home / 137,757.11-206,438.36-78,470.37

Finding the Fourth Proportional to 137,757.11, 206,438.36 and 78,470.37

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Solution

The fourth proportional to 137,757.11, 206,438.36 and 78,470.37 is: 117,593.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,757.11 : 206,438.36 = 78,470.37 : x
  2. Step 2: Convert to fraction form
    137,757.11/206,438.36 = 78,470.37/x
  3. Step 3: Cross multiply
    137,757.11x = 206,438.36 × 78,470.37
  4. Step 4: Simplify right side
    137,757.11x = 16,199,294,099.04
  5. Step 5: Solve for x
    x = 16,199,294,099.04/137,757.11
  6. Step 6: Final answer
    x = 117,593.17

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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.