Home / 205,612.38-308,377.26-72,498.06

Finding the Fourth Proportional to 205,612.38, 308,377.26 and 72,498.06

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Solution

The fourth proportional to 205,612.38, 308,377.26 and 72,498.06 is: 108,732.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,612.38 : 308,377.26 = 72,498.06 : x
  2. Step 2: Convert to fraction form
    205,612.38/308,377.26 = 72,498.06/x
  3. Step 3: Cross multiply
    205,612.38x = 308,377.26 × 72,498.06
  4. Step 4: Simplify right side
    205,612.38x = 22,356,753,098.12
  5. Step 5: Solve for x
    x = 22,356,753,098.12/205,612.38
  6. Step 6: Final answer
    x = 108,732.52

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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.