Home / 259,972.37-389,966.51-89,191.69

Finding the Fourth Proportional to 259,972.37, 389,966.51 and 89,191.69

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Solution

The fourth proportional to 259,972.37, 389,966.51 and 89,191.69 is: 133,790.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,972.37 : 389,966.51 = 89,191.69 : x
  2. Step 2: Convert to fraction form
    259,972.37/389,966.51 = 89,191.69/x
  3. Step 3: Cross multiply
    259,972.37x = 389,966.51 × 89,191.69
  4. Step 4: Simplify right side
    259,972.37x = 34,781,770,649.43
  5. Step 5: Solve for x
    x = 34,781,770,649.43/259,972.37
  6. Step 6: Final answer
    x = 133,790.26

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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.