Home / 253,213.38-379,709.28-120,131.64

Finding the Fourth Proportional to 253,213.38, 379,709.28 and 120,131.64

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Solution

The fourth proportional to 253,213.38, 379,709.28 and 120,131.64 is: 180,144.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,213.38 : 379,709.28 = 120,131.64 : x
  2. Step 2: Convert to fraction form
    253,213.38/379,709.28 = 120,131.64/x
  3. Step 3: Cross multiply
    253,213.38x = 379,709.28 × 120,131.64
  4. Step 4: Simplify right side
    253,213.38x = 45,615,098,529.62
  5. Step 5: Solve for x
    x = 45,615,098,529.62/253,213.38
  6. Step 6: Final answer
    x = 180,144.90

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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.