Home / 141,558.54-195,351.48-81,132.78

Finding the Fourth Proportional to 141,558.54, 195,351.48 and 81,132.78

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Solution

The fourth proportional to 141,558.54, 195,351.48 and 81,132.78 is: 111,963.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,558.54 : 195,351.48 = 81,132.78 : x
  2. Step 2: Convert to fraction form
    141,558.54/195,351.48 = 81,132.78/x
  3. Step 3: Cross multiply
    141,558.54x = 195,351.48 × 81,132.78
  4. Step 4: Simplify right side
    141,558.54x = 15,849,408,649.51
  5. Step 5: Solve for x
    x = 15,849,408,649.51/141,558.54
  6. Step 6: Final answer
    x = 111,963.63

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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.