Home / 141,801.75-195,687.05-78,138.18

Finding the Fourth Proportional to 141,801.75, 195,687.05 and 78,138.18

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Solution

The fourth proportional to 141,801.75, 195,687.05 and 78,138.18 is: 107,831.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,801.75 : 195,687.05 = 78,138.18 : x
  2. Step 2: Convert to fraction form
    141,801.75/195,687.05 = 78,138.18/x
  3. Step 3: Cross multiply
    141,801.75x = 195,687.05 × 78,138.18
  4. Step 4: Simplify right side
    141,801.75x = 15,290,629,545.88
  5. Step 5: Solve for x
    x = 15,290,629,545.88/141,801.75
  6. Step 6: Final answer
    x = 107,831.04

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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.