Home / 141,768.74-195,669.20-81,380.21

Finding the Fourth Proportional to 141,768.74, 195,669.20 and 81,380.21

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Solution

The fourth proportional to 141,768.74, 195,669.20 and 81,380.21 is: 112,320.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,768.74 : 195,669.20 = 81,380.21 : x
  2. Step 2: Convert to fraction form
    141,768.74/195,669.20 = 81,380.21/x
  3. Step 3: Cross multiply
    141,768.74x = 195,669.20 × 81,380.21
  4. Step 4: Simplify right side
    141,768.74x = 15,923,600,586.53
  5. Step 5: Solve for x
    x = 15,923,600,586.53/141,768.74
  6. Step 6: Final answer
    x = 112,320.96

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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.