Home / 205,878.24-308,216.40-126,755.04

Finding the Fourth Proportional to 205,878.24, 308,216.40 and 126,755.04

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Solution

The fourth proportional to 205,878.24, 308,216.40 and 126,755.04 is: 189,762.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,878.24 : 308,216.40 = 126,755.04 : x
  2. Step 2: Convert to fraction form
    205,878.24/308,216.40 = 126,755.04/x
  3. Step 3: Cross multiply
    205,878.24x = 308,216.40 × 126,755.04
  4. Step 4: Simplify right side
    205,878.24x = 39,067,982,110.66
  5. Step 5: Solve for x
    x = 39,067,982,110.66/205,878.24
  6. Step 6: Final answer
    x = 189,762.56

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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.