Home / 206,700.24-285,333-139,722.96

Finding the Fourth Proportional to 206,700.24, 285,333 and 139,722.96

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Solution

The fourth proportional to 206,700.24, 285,333 and 139,722.96 is: 192,876.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,700.24 : 285,333 = 139,722.96 : x
  2. Step 2: Convert to fraction form
    206,700.24/285,333 = 139,722.96/x
  3. Step 3: Cross multiply
    206,700.24x = 285,333 × 139,722.96
  4. Step 4: Simplify right side
    206,700.24x = 39,867,571,345.68
  5. Step 5: Solve for x
    x = 39,867,571,345.68/206,700.24
  6. Step 6: Final answer
    x = 192,876.27

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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.