Home / 103,918.50-155,872.11-40,749.96

Finding the Fourth Proportional to 103,918.50, 155,872.11 and 40,749.96

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Solution

The fourth proportional to 103,918.50, 155,872.11 and 40,749.96 is: 61,122.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,918.50 : 155,872.11 = 40,749.96 : x
  2. Step 2: Convert to fraction form
    103,918.50/155,872.11 = 40,749.96/x
  3. Step 3: Cross multiply
    103,918.50x = 155,872.11 × 40,749.96
  4. Step 4: Simplify right side
    103,918.50x = 6,351,782,247.62
  5. Step 5: Solve for x
    x = 6,351,782,247.62/103,918.50
  6. Step 6: Final answer
    x = 61,122.73

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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.