Home / 205,121.97-307,087.10-119,471.66

Finding the Fourth Proportional to 205,121.97, 307,087.10 and 119,471.66

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Solution

The fourth proportional to 205,121.97, 307,087.10 and 119,471.66 is: 178,860.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,121.97 : 307,087.10 = 119,471.66 : x
  2. Step 2: Convert to fraction form
    205,121.97/307,087.10 = 119,471.66/x
  3. Step 3: Cross multiply
    205,121.97x = 307,087.10 × 119,471.66
  4. Step 4: Simplify right side
    205,121.97x = 36,688,205,068.39
  5. Step 5: Solve for x
    x = 36,688,205,068.39/205,121.97
  6. Step 6: Final answer
    x = 178,860.44

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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.