Home / 455,121.01-682,456.87-139,501.81

Finding the Fourth Proportional to 455,121.01, 682,456.87 and 139,501.81

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Solution

The fourth proportional to 455,121.01, 682,456.87 and 139,501.81 is: 209,183.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,121.01 : 682,456.87 = 139,501.81 : x
  2. Step 2: Convert to fraction form
    455,121.01/682,456.87 = 139,501.81/x
  3. Step 3: Cross multiply
    455,121.01x = 682,456.87 × 139,501.81
  4. Step 4: Simplify right side
    455,121.01x = 95,203,968,611.93
  5. Step 5: Solve for x
    x = 95,203,968,611.93/455,121.01
  6. Step 6: Final answer
    x = 209,183.86

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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.