Home / 139,234.33-208,813.20-68,120.38

Finding the Fourth Proportional to 139,234.33, 208,813.20 and 68,120.38

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Solution

The fourth proportional to 139,234.33, 208,813.20 and 68,120.38 is: 102,161.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,234.33 : 208,813.20 = 68,120.38 : x
  2. Step 2: Convert to fraction form
    139,234.33/208,813.20 = 68,120.38/x
  3. Step 3: Cross multiply
    139,234.33x = 208,813.20 × 68,120.38
  4. Step 4: Simplify right side
    139,234.33x = 14,224,434,533.02
  5. Step 5: Solve for x
    x = 14,224,434,533.02/139,234.33
  6. Step 6: Final answer
    x = 102,161.83

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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.