Home / 214,274.22-321,417.40-81,129.66

Finding the Fourth Proportional to 214,274.22, 321,417.40 and 81,129.66

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Solution

The fourth proportional to 214,274.22, 321,417.40 and 81,129.66 is: 121,696.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,274.22 : 321,417.40 = 81,129.66 : x
  2. Step 2: Convert to fraction form
    214,274.22/321,417.40 = 81,129.66/x
  3. Step 3: Cross multiply
    214,274.22x = 321,417.40 × 81,129.66
  4. Step 4: Simplify right side
    214,274.22x = 26,076,484,380.08
  5. Step 5: Solve for x
    x = 26,076,484,380.08/214,274.22
  6. Step 6: Final answer
    x = 121,696.79

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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.