Home / 259,989.19-389,934.46-126,735.43

Finding the Fourth Proportional to 259,989.19, 389,934.46 and 126,735.43

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Solution

The fourth proportional to 259,989.19, 389,934.46 and 126,735.43 is: 190,079.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,989.19 : 389,934.46 = 126,735.43 : x
  2. Step 2: Convert to fraction form
    259,989.19/389,934.46 = 126,735.43/x
  3. Step 3: Cross multiply
    259,989.19x = 389,934.46 × 126,735.43
  4. Step 4: Simplify right side
    259,989.19x = 49,418,510,643.50
  5. Step 5: Solve for x
    x = 49,418,510,643.50/259,989.19
  6. Step 6: Final answer
    x = 190,079.10

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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.