Home / 205,177.22-307,792.88-77,135.66

Finding the Fourth Proportional to 205,177.22, 307,792.88 and 77,135.66

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Solution

The fourth proportional to 205,177.22, 307,792.88 and 77,135.66 is: 115,713.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,177.22 : 307,792.88 = 77,135.66 : x
  2. Step 2: Convert to fraction form
    205,177.22/307,792.88 = 77,135.66/x
  3. Step 3: Cross multiply
    205,177.22x = 307,792.88 × 77,135.66
  4. Step 4: Simplify right side
    205,177.22x = 23,741,806,942.10
  5. Step 5: Solve for x
    x = 23,741,806,942.10/205,177.22
  6. Step 6: Final answer
    x = 115,713.66

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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.