Home / 259,794.10-389,704.65-126,787.78

Finding the Fourth Proportional to 259,794.10, 389,704.65 and 126,787.78

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Solution

The fourth proportional to 259,794.10, 389,704.65 and 126,787.78 is: 190,188.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,794.10 : 389,704.65 = 126,787.78 : x
  2. Step 2: Convert to fraction form
    259,794.10/389,704.65 = 126,787.78/x
  3. Step 3: Cross multiply
    259,794.10x = 389,704.65 × 126,787.78
  4. Step 4: Simplify right side
    259,794.10x = 49,409,787,429.18
  5. Step 5: Solve for x
    x = 49,409,787,429.18/259,794.10
  6. Step 6: Final answer
    x = 190,188.26

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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.