Home / 141,989.22-195,941.97-78,327

Finding the Fourth Proportional to 141,989.22, 195,941.97 and 78,327

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Solution

The fourth proportional to 141,989.22, 195,941.97 and 78,327 is: 108,089.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,989.22 : 195,941.97 = 78,327 : x
  2. Step 2: Convert to fraction form
    141,989.22/195,941.97 = 78,327/x
  3. Step 3: Cross multiply
    141,989.22x = 195,941.97 × 78,327
  4. Step 4: Simplify right side
    141,989.22x = 15,347,546,684.19
  5. Step 5: Solve for x
    x = 15,347,546,684.19/141,989.22
  6. Step 6: Final answer
    x = 108,089.52

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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.