Home / 193,121.60-289,711.20-68,452.80

Finding the Fourth Proportional to 193,121.60, 289,711.20 and 68,452.80

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Solution

The fourth proportional to 193,121.60, 289,711.20 and 68,452.80 is: 102,689.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,121.60 : 289,711.20 = 68,452.80 : x
  2. Step 2: Convert to fraction form
    193,121.60/289,711.20 = 68,452.80/x
  3. Step 3: Cross multiply
    193,121.60x = 289,711.20 × 68,452.80
  4. Step 4: Simplify right side
    193,121.60x = 19,831,542,831.36
  5. Step 5: Solve for x
    x = 19,831,542,831.36/193,121.60
  6. Step 6: Final answer
    x = 102,689.41

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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.