Home / 214,364.40-321,365.16-81,171.24

Finding the Fourth Proportional to 214,364.40, 321,365.16 and 81,171.24

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Solution

The fourth proportional to 214,364.40, 321,365.16 and 81,171.24 is: 121,688.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,364.40 : 321,365.16 = 81,171.24 : x
  2. Step 2: Convert to fraction form
    214,364.40/321,365.16 = 81,171.24/x
  3. Step 3: Cross multiply
    214,364.40x = 321,365.16 × 81,171.24
  4. Step 4: Simplify right side
    214,364.40x = 26,085,608,530.00
  5. Step 5: Solve for x
    x = 26,085,608,530.00/214,364.40
  6. Step 6: Final answer
    x = 121,688.16

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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.