Home / 213,426.12-320,139.18-73,185.96

Finding the Fourth Proportional to 213,426.12, 320,139.18 and 73,185.96

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Solution

The fourth proportional to 213,426.12, 320,139.18 and 73,185.96 is: 109,778.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,426.12 : 320,139.18 = 73,185.96 : x
  2. Step 2: Convert to fraction form
    213,426.12/320,139.18 = 73,185.96/x
  3. Step 3: Cross multiply
    213,426.12x = 320,139.18 × 73,185.96
  4. Step 4: Simplify right side
    213,426.12x = 23,429,693,221.91
  5. Step 5: Solve for x
    x = 23,429,693,221.91/213,426.12
  6. Step 6: Final answer
    x = 109,778.94

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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.