Home / 141,447.28-195,142-80,985.61

Finding the Fourth Proportional to 141,447.28, 195,142 and 80,985.61

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Solution

The fourth proportional to 141,447.28, 195,142 and 80,985.61 is: 111,728.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,447.28 : 195,142 = 80,985.61 : x
  2. Step 2: Convert to fraction form
    141,447.28/195,142 = 80,985.61/x
  3. Step 3: Cross multiply
    141,447.28x = 195,142 × 80,985.61
  4. Step 4: Simplify right side
    141,447.28x = 15,803,693,906.62
  5. Step 5: Solve for x
    x = 15,803,693,906.62/141,447.28
  6. Step 6: Final answer
    x = 111,728.51

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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.