Home / 212,761.92-319,150.98-79,628.16

Finding the Fourth Proportional to 212,761.92, 319,150.98 and 79,628.16

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Solution

The fourth proportional to 212,761.92, 319,150.98 and 79,628.16 is: 119,445.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,761.92 : 319,150.98 = 79,628.16 : x
  2. Step 2: Convert to fraction form
    212,761.92/319,150.98 = 79,628.16/x
  3. Step 3: Cross multiply
    212,761.92x = 319,150.98 × 79,628.16
  4. Step 4: Simplify right side
    212,761.92x = 25,413,405,299.60
  5. Step 5: Solve for x
    x = 25,413,405,299.60/212,761.92
  6. Step 6: Final answer
    x = 119,445.27

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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.