Home / 137,824.83-206,734.77-78,534.09

Finding the Fourth Proportional to 137,824.83, 206,734.77 and 78,534.09

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Solution

The fourth proportional to 137,824.83, 206,734.77 and 78,534.09 is: 117,799.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,824.83 : 206,734.77 = 78,534.09 : x
  2. Step 2: Convert to fraction form
    137,824.83/206,734.77 = 78,534.09/x
  3. Step 3: Cross multiply
    137,824.83x = 206,734.77 × 78,534.09
  4. Step 4: Simplify right side
    137,824.83x = 16,235,727,033.31
  5. Step 5: Solve for x
    x = 16,235,727,033.31/137,824.83
  6. Step 6: Final answer
    x = 117,799.72

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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.