Home / 205,445.90-307,974.45-121,270.70

Finding the Fourth Proportional to 205,445.90, 307,974.45 and 121,270.70

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Solution

The fourth proportional to 205,445.90, 307,974.45 and 121,270.70 is: 181,791.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,445.90 : 307,974.45 = 121,270.70 : x
  2. Step 2: Convert to fraction form
    205,445.90/307,974.45 = 121,270.70/x
  3. Step 3: Cross multiply
    205,445.90x = 307,974.45 × 121,270.70
  4. Step 4: Simplify right side
    205,445.90x = 37,348,277,133.62
  5. Step 5: Solve for x
    x = 37,348,277,133.62/205,445.90
  6. Step 6: Final answer
    x = 181,791.30

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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.