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Finding the Fourth Proportional to 131,358.97, 181,205.31 and 80,396.39

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Solution

The fourth proportional to 131,358.97, 181,205.31 and 80,396.39 is: 110,904.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,358.97 : 181,205.31 = 80,396.39 : x
  2. Step 2: Convert to fraction form
    131,358.97/181,205.31 = 80,396.39/x
  3. Step 3: Cross multiply
    131,358.97x = 181,205.31 × 80,396.39
  4. Step 4: Simplify right side
    131,358.97x = 14,568,252,772.83
  5. Step 5: Solve for x
    x = 14,568,252,772.83/131,358.97
  6. Step 6: Final answer
    x = 110,904.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.