Home / 141,781.09-195,662.33-81,362.78

Finding the Fourth Proportional to 141,781.09, 195,662.33 and 81,362.78

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Solution

The fourth proportional to 141,781.09, 195,662.33 and 81,362.78 is: 112,283.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,781.09 : 195,662.33 = 81,362.78 : x
  2. Step 2: Convert to fraction form
    141,781.09/195,662.33 = 81,362.78/x
  3. Step 3: Cross multiply
    141,781.09x = 195,662.33 × 81,362.78
  4. Step 4: Simplify right side
    141,781.09x = 15,919,631,650.09
  5. Step 5: Solve for x
    x = 15,919,631,650.09/141,781.09
  6. Step 6: Final answer
    x = 112,283.18

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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.