Home / 259,729.06-389,636.52-91,205.56

Finding the Fourth Proportional to 259,729.06, 389,636.52 and 91,205.56

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Solution

The fourth proportional to 259,729.06, 389,636.52 and 91,205.56 is: 136,823.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,729.06 : 389,636.52 = 91,205.56 : x
  2. Step 2: Convert to fraction form
    259,729.06/389,636.52 = 91,205.56/x
  3. Step 3: Cross multiply
    259,729.06x = 389,636.52 × 91,205.56
  4. Step 4: Simplify right side
    259,729.06x = 35,537,017,003.05
  5. Step 5: Solve for x
    x = 35,537,017,003.05/259,729.06
  6. Step 6: Final answer
    x = 136,823.42

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1.5x scale

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.