Home / 272,195.10-408,375.81-139,168.80

Finding the Fourth Proportional to 272,195.10, 408,375.81 and 139,168.80

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Solution

The fourth proportional to 272,195.10, 408,375.81 and 139,168.80 is: 208,795.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,195.10 : 408,375.81 = 139,168.80 : x
  2. Step 2: Convert to fraction form
    272,195.10/408,375.81 = 139,168.80/x
  3. Step 3: Cross multiply
    272,195.10x = 408,375.81 × 139,168.80
  4. Step 4: Simplify right side
    272,195.10x = 56,833,171,426.73
  5. Step 5: Solve for x
    x = 56,833,171,426.73/272,195.10
  6. Step 6: Final answer
    x = 208,795.72

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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.