Home / 141,720.78-195,554.34-81,293.97

Finding the Fourth Proportional to 141,720.78, 195,554.34 and 81,293.97

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Solution

The fourth proportional to 141,720.78, 195,554.34 and 81,293.97 is: 112,174.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,720.78 : 195,554.34 = 81,293.97 : x
  2. Step 2: Convert to fraction form
    141,720.78/195,554.34 = 81,293.97/x
  3. Step 3: Cross multiply
    141,720.78x = 195,554.34 × 81,293.97
  4. Step 4: Simplify right side
    141,720.78x = 15,897,388,649.33
  5. Step 5: Solve for x
    x = 15,897,388,649.33/141,720.78
  6. Step 6: Final answer
    x = 112,174.01

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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.