Home / 214,429.70-321,521.47-81,225

Finding the Fourth Proportional to 214,429.70, 321,521.47 and 81,225

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Solution

The fourth proportional to 214,429.70, 321,521.47 and 81,225 is: 121,790.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,429.70 : 321,521.47 = 81,225 : x
  2. Step 2: Convert to fraction form
    214,429.70/321,521.47 = 81,225/x
  3. Step 3: Cross multiply
    214,429.70x = 321,521.47 × 81,225
  4. Step 4: Simplify right side
    214,429.70x = 26,115,581,197.69
  5. Step 5: Solve for x
    x = 26,115,581,197.69/214,429.70
  6. Step 6: Final answer
    x = 121,790.88

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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.