Home / 189,787.66-261,737.31-157,471.09

Finding the Fourth Proportional to 189,787.66, 261,737.31 and 157,471.09

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Solution

The fourth proportional to 189,787.66, 261,737.31 and 157,471.09 is: 217,169.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,787.66 : 261,737.31 = 157,471.09 : x
  2. Step 2: Convert to fraction form
    189,787.66/261,737.31 = 157,471.09/x
  3. Step 3: Cross multiply
    189,787.66x = 261,737.31 × 157,471.09
  4. Step 4: Simplify right side
    189,787.66x = 41,216,058,845.02
  5. Step 5: Solve for x
    x = 41,216,058,845.02/189,787.66
  6. Step 6: Final answer
    x = 217,169.33

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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.