Home / 149,717.21-206,606.43-81,731.57

Finding the Fourth Proportional to 149,717.21, 206,606.43 and 81,731.57

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Solution

The fourth proportional to 149,717.21, 206,606.43 and 81,731.57 is: 112,787.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,717.21 : 206,606.43 = 81,731.57 : x
  2. Step 2: Convert to fraction form
    149,717.21/206,606.43 = 81,731.57/x
  3. Step 3: Cross multiply
    149,717.21x = 206,606.43 × 81,731.57
  4. Step 4: Simplify right side
    149,717.21x = 16,886,266,862.96
  5. Step 5: Solve for x
    x = 16,886,266,862.96/149,717.21
  6. Step 6: Final answer
    x = 112,787.75

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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.