Home / 205,340.75-307,261.78-121,141.25

Finding the Fourth Proportional to 205,340.75, 307,261.78 and 121,141.25

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Solution

The fourth proportional to 205,340.75, 307,261.78 and 121,141.25 is: 181,269.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,340.75 : 307,261.78 = 121,141.25 : x
  2. Step 2: Convert to fraction form
    205,340.75/307,261.78 = 121,141.25/x
  3. Step 3: Cross multiply
    205,340.75x = 307,261.78 × 121,141.25
  4. Step 4: Simplify right side
    205,340.75x = 37,222,076,571.73
  5. Step 5: Solve for x
    x = 37,222,076,571.73/205,340.75
  6. Step 6: Final answer
    x = 181,269.80

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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.