Home / 205,983.92-309,034.20-121,818.80

Finding the Fourth Proportional to 205,983.92, 309,034.20 and 121,818.80

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Solution

The fourth proportional to 205,983.92, 309,034.20 and 121,818.80 is: 182,762.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,983.92 : 309,034.20 = 121,818.80 : x
  2. Step 2: Convert to fraction form
    205,983.92/309,034.20 = 121,818.80/x
  3. Step 3: Cross multiply
    205,983.92x = 309,034.20 × 121,818.80
  4. Step 4: Simplify right side
    205,983.92x = 37,646,175,402.96
  5. Step 5: Solve for x
    x = 37,646,175,402.96/205,983.92
  6. Step 6: Final answer
    x = 182,762.69

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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.