Home / 141,761.95-195,640.32-78,099.73

Finding the Fourth Proportional to 141,761.95, 195,640.32 and 78,099.73

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Solution

The fourth proportional to 141,761.95, 195,640.32 and 78,099.73 is: 107,782.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,761.95 : 195,640.32 = 78,099.73 : x
  2. Step 2: Convert to fraction form
    141,761.95/195,640.32 = 78,099.73/x
  3. Step 3: Cross multiply
    141,761.95x = 195,640.32 × 78,099.73
  4. Step 4: Simplify right side
    141,761.95x = 15,279,456,169.11
  5. Step 5: Solve for x
    x = 15,279,456,169.11/141,761.95
  6. Step 6: Final answer
    x = 107,782.49

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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.