Home / 137,986.20-206,979.30-49,339.80

Finding the Fourth Proportional to 137,986.20, 206,979.30 and 49,339.80

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Solution

The fourth proportional to 137,986.20, 206,979.30 and 49,339.80 is: 74,009.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,986.20 : 206,979.30 = 49,339.80 : x
  2. Step 2: Convert to fraction form
    137,986.20/206,979.30 = 49,339.80/x
  3. Step 3: Cross multiply
    137,986.20x = 206,979.30 × 49,339.80
  4. Step 4: Simplify right side
    137,986.20x = 10,212,317,266.14
  5. Step 5: Solve for x
    x = 10,212,317,266.14/137,986.20
  6. Step 6: Final answer
    x = 74,009.70

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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.