Home / 214,410.56-321,388.86-72,120.38

Finding the Fourth Proportional to 214,410.56, 321,388.86 and 72,120.38

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Solution

The fourth proportional to 214,410.56, 321,388.86 and 72,120.38 is: 108,104.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,410.56 : 321,388.86 = 72,120.38 : x
  2. Step 2: Convert to fraction form
    214,410.56/321,388.86 = 72,120.38/x
  3. Step 3: Cross multiply
    214,410.56x = 321,388.86 × 72,120.38
  4. Step 4: Simplify right side
    214,410.56x = 23,178,686,710.97
  5. Step 5: Solve for x
    x = 23,178,686,710.97/214,410.56
  6. Step 6: Final answer
    x = 108,104.22

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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.