Home / 214,364.90-321,365.91-81,171.74

Finding the Fourth Proportional to 214,364.90, 321,365.91 and 81,171.74

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Solution

The fourth proportional to 214,364.90, 321,365.91 and 81,171.74 is: 121,688.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,364.90 : 321,365.91 = 81,171.74 : x
  2. Step 2: Convert to fraction form
    214,364.90/321,365.91 = 81,171.74/x
  3. Step 3: Cross multiply
    214,364.90x = 321,365.91 × 81,171.74
  4. Step 4: Simplify right side
    214,364.90x = 26,085,830,091.38
  5. Step 5: Solve for x
    x = 26,085,830,091.38/214,364.90
  6. Step 6: Final answer
    x = 121,688.91

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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.