Home / 209,122.20-313,683.30-68,862.60

Finding the Fourth Proportional to 209,122.20, 313,683.30 and 68,862.60

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Solution

The fourth proportional to 209,122.20, 313,683.30 and 68,862.60 is: 103,293.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,122.20 : 313,683.30 = 68,862.60 : x
  2. Step 2: Convert to fraction form
    209,122.20/313,683.30 = 68,862.60/x
  3. Step 3: Cross multiply
    209,122.20x = 313,683.30 × 68,862.60
  4. Step 4: Simplify right side
    209,122.20x = 21,601,047,614.58
  5. Step 5: Solve for x
    x = 21,601,047,614.58/209,122.20
  6. Step 6: Final answer
    x = 103,293.90

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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.