Home / 149,764.31-206,683.10-81,787.59

Finding the Fourth Proportional to 149,764.31, 206,683.10 and 81,787.59

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Solution

The fourth proportional to 149,764.31, 206,683.10 and 81,787.59 is: 112,871.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,764.31 : 206,683.10 = 81,787.59 : x
  2. Step 2: Convert to fraction form
    149,764.31/206,683.10 = 81,787.59/x
  3. Step 3: Cross multiply
    149,764.31x = 206,683.10 × 81,787.59
  4. Step 4: Simplify right side
    149,764.31x = 16,904,112,233.79
  5. Step 5: Solve for x
    x = 16,904,112,233.79/149,764.31
  6. Step 6: Final answer
    x = 112,871.44

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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.