Home / 201,524.05-278,142.96-115,540.80

Finding the Fourth Proportional to 201,524.05, 278,142.96 and 115,540.80

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Solution

The fourth proportional to 201,524.05, 278,142.96 and 115,540.80 is: 159,469.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,524.05 : 278,142.96 = 115,540.80 : x
  2. Step 2: Convert to fraction form
    201,524.05/278,142.96 = 115,540.80/x
  3. Step 3: Cross multiply
    201,524.05x = 278,142.96 × 115,540.80
  4. Step 4: Simplify right side
    201,524.05x = 32,136,860,112.77
  5. Step 5: Solve for x
    x = 32,136,860,112.77/201,524.05
  6. Step 6: Final answer
    x = 159,469.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.