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Finding the Fourth Proportional to 132,610.40, 198,787.80 and 85,091.48

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Solution

The fourth proportional to 132,610.40, 198,787.80 and 85,091.48 is: 127,555.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,610.40 : 198,787.80 = 85,091.48 : x
  2. Step 2: Convert to fraction form
    132,610.40/198,787.80 = 85,091.48/x
  3. Step 3: Cross multiply
    132,610.40x = 198,787.80 × 85,091.48
  4. Step 4: Simplify right side
    132,610.40x = 16,915,148,107.94
  5. Step 5: Solve for x
    x = 16,915,148,107.94/132,610.40
  6. Step 6: Final answer
    x = 127,555.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.