Home / 214,430.10-321,691.92-81,311.66

Finding the Fourth Proportional to 214,430.10, 321,691.92 and 81,311.66

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Solution

The fourth proportional to 214,430.10, 321,691.92 and 81,311.66 is: 121,985.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,430.10 : 321,691.92 = 81,311.66 : x
  2. Step 2: Convert to fraction form
    214,430.10/321,691.92 = 81,311.66/x
  3. Step 3: Cross multiply
    214,430.10x = 321,691.92 × 81,311.66
  4. Step 4: Simplify right side
    214,430.10x = 26,157,304,023.79
  5. Step 5: Solve for x
    x = 26,157,304,023.79/214,430.10
  6. Step 6: Final answer
    x = 121,985.23

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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.