Home / 156,071.43-215,378.24-84,451.43

Finding the Fourth Proportional to 156,071.43, 215,378.24 and 84,451.43

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Solution

The fourth proportional to 156,071.43, 215,378.24 and 84,451.43 is: 116,542.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,071.43 : 215,378.24 = 84,451.43 : x
  2. Step 2: Convert to fraction form
    156,071.43/215,378.24 = 84,451.43/x
  3. Step 3: Cross multiply
    156,071.43x = 215,378.24 × 84,451.43
  4. Step 4: Simplify right side
    156,071.43x = 18,188,998,859.73
  5. Step 5: Solve for x
    x = 18,188,998,859.73/156,071.43
  6. Step 6: Final answer
    x = 116,542.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.