Home / 149,991.19-206,988.21-82,012.55

Finding the Fourth Proportional to 149,991.19, 206,988.21 and 82,012.55

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Solution

The fourth proportional to 149,991.19, 206,988.21 and 82,012.55 is: 113,177.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,991.19 : 206,988.21 = 82,012.55 : x
  2. Step 2: Convert to fraction form
    149,991.19/206,988.21 = 82,012.55/x
  3. Step 3: Cross multiply
    149,991.19x = 206,988.21 × 82,012.55
  4. Step 4: Simplify right side
    149,991.19x = 16,975,631,439.51
  5. Step 5: Solve for x
    x = 16,975,631,439.51/149,991.19
  6. Step 6: Final answer
    x = 113,177.53

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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.