Home / 253,213.92-379,872-112,972.56

Finding the Fourth Proportional to 253,213.92, 379,872 and 112,972.56

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Solution

The fourth proportional to 253,213.92, 379,872 and 112,972.56 is: 169,481.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,213.92 : 379,872 = 112,972.56 : x
  2. Step 2: Convert to fraction form
    253,213.92/379,872 = 112,972.56/x
  3. Step 3: Cross multiply
    253,213.92x = 379,872 × 112,972.56
  4. Step 4: Simplify right side
    253,213.92x = 42,915,112,312.32
  5. Step 5: Solve for x
    x = 42,915,112,312.32/253,213.92
  6. Step 6: Final answer
    x = 169,481.65

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1.5x scale

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.