Home / 149,954.13-206,936.19-81,971.10

Finding the Fourth Proportional to 149,954.13, 206,936.19 and 81,971.10

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Solution

The fourth proportional to 149,954.13, 206,936.19 and 81,971.10 is: 113,119.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,954.13 : 206,936.19 = 81,971.10 : x
  2. Step 2: Convert to fraction form
    149,954.13/206,936.19 = 81,971.10/x
  3. Step 3: Cross multiply
    149,954.13x = 206,936.19 × 81,971.10
  4. Step 4: Simplify right side
    149,954.13x = 16,962,787,124.11
  5. Step 5: Solve for x
    x = 16,962,787,124.11/149,954.13
  6. Step 6: Final answer
    x = 113,119.84

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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.