Home / 149,713.26-206,601.21-81,731.58

Finding the Fourth Proportional to 149,713.26, 206,601.21 and 81,731.58

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Solution

The fourth proportional to 149,713.26, 206,601.21 and 81,731.58 is: 112,787.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,713.26 : 206,601.21 = 81,731.58 : x
  2. Step 2: Convert to fraction form
    149,713.26/206,601.21 = 81,731.58/x
  3. Step 3: Cross multiply
    149,713.26x = 206,601.21 × 81,731.58
  4. Step 4: Simplify right side
    149,713.26x = 16,885,843,323.21
  5. Step 5: Solve for x
    x = 16,885,843,323.21/149,713.26
  6. Step 6: Final answer
    x = 112,787.89

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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.