Home / 205,918.39-309,077.31-99,377.33

Finding the Fourth Proportional to 205,918.39, 309,077.31 and 99,377.33

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Solution

The fourth proportional to 205,918.39, 309,077.31 and 99,377.33 is: 149,162.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,918.39 : 309,077.31 = 99,377.33 : x
  2. Step 2: Convert to fraction form
    205,918.39/309,077.31 = 99,377.33/x
  3. Step 3: Cross multiply
    205,918.39x = 309,077.31 × 99,377.33
  4. Step 4: Simplify right side
    205,918.39x = 30,715,277,831.38
  5. Step 5: Solve for x
    x = 30,715,277,831.38/205,918.39
  6. Step 6: Final answer
    x = 149,162.38

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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.