Home / 129,161.25-178,180.42-83,853.44

Finding the Fourth Proportional to 129,161.25, 178,180.42 and 83,853.44

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Solution

The fourth proportional to 129,161.25, 178,180.42 and 83,853.44 is: 115,677.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,161.25 : 178,180.42 = 83,853.44 : x
  2. Step 2: Convert to fraction form
    129,161.25/178,180.42 = 83,853.44/x
  3. Step 3: Cross multiply
    129,161.25x = 178,180.42 × 83,853.44
  4. Step 4: Simplify right side
    129,161.25x = 14,941,041,648.94
  5. Step 5: Solve for x
    x = 14,941,041,648.94/129,161.25
  6. Step 6: Final answer
    x = 115,677.43

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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.