Home / 214,721.13-321,981.74-79,691.16

Finding the Fourth Proportional to 214,721.13, 321,981.74 and 79,691.16

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Solution

The fourth proportional to 214,721.13, 321,981.74 and 79,691.16 is: 119,499.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,721.13 : 321,981.74 = 79,691.16 : x
  2. Step 2: Convert to fraction form
    214,721.13/321,981.74 = 79,691.16/x
  3. Step 3: Cross multiply
    214,721.13x = 321,981.74 × 79,691.16
  4. Step 4: Simplify right side
    214,721.13x = 25,659,097,960.96
  5. Step 5: Solve for x
    x = 25,659,097,960.96/214,721.13
  6. Step 6: Final answer
    x = 119,499.64

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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.