Home / 259,986.50-389,930.43-126,732.74

Finding the Fourth Proportional to 259,986.50, 389,930.43 and 126,732.74

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Solution

The fourth proportional to 259,986.50, 389,930.43 and 126,732.74 is: 190,075.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,986.50 : 389,930.43 = 126,732.74 : x
  2. Step 2: Convert to fraction form
    259,986.50/389,930.43 = 126,732.74/x
  3. Step 3: Cross multiply
    259,986.50x = 389,930.43 × 126,732.74
  4. Step 4: Simplify right side
    259,986.50x = 49,416,951,803.28
  5. Step 5: Solve for x
    x = 49,416,951,803.28/259,986.50
  6. Step 6: Final answer
    x = 190,075.07

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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.