Home / 259,990.19-389,935.96-126,736.43

Finding the Fourth Proportional to 259,990.19, 389,935.96 and 126,736.43

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Solution

The fourth proportional to 259,990.19, 389,935.96 and 126,736.43 is: 190,080.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,990.19 : 389,935.96 = 126,736.43 : x
  2. Step 2: Convert to fraction form
    259,990.19/389,935.96 = 126,736.43/x
  3. Step 3: Cross multiply
    259,990.19x = 389,935.96 × 126,736.43
  4. Step 4: Simplify right side
    259,990.19x = 49,419,091,499.02
  5. Step 5: Solve for x
    x = 49,419,091,499.02/259,990.19
  6. Step 6: Final answer
    x = 190,080.60

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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.