Home / 214,577.40-321,635.70-81,406.20

Finding the Fourth Proportional to 214,577.40, 321,635.70 and 81,406.20

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Solution

The fourth proportional to 214,577.40, 321,635.70 and 81,406.20 is: 122,021.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,577.40 : 321,635.70 = 81,406.20 : x
  2. Step 2: Convert to fraction form
    214,577.40/321,635.70 = 81,406.20/x
  3. Step 3: Cross multiply
    214,577.40x = 321,635.70 × 81,406.20
  4. Step 4: Simplify right side
    214,577.40x = 26,183,140,121.34
  5. Step 5: Solve for x
    x = 26,183,140,121.34/214,577.40
  6. Step 6: Final answer
    x = 122,021.89

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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.