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Finding the Fourth Proportional to 134,833.70, 202,187.97 and 78,689.97

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Solution

The fourth proportional to 134,833.70, 202,187.97 and 78,689.97 is: 117,998.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,833.70 : 202,187.97 = 78,689.97 : x
  2. Step 2: Convert to fraction form
    134,833.70/202,187.97 = 78,689.97/x
  3. Step 3: Cross multiply
    134,833.70x = 202,187.97 × 78,689.97
  4. Step 4: Simplify right side
    134,833.70x = 15,910,165,293.66
  5. Step 5: Solve for x
    x = 15,910,165,293.66/134,833.70
  6. Step 6: Final answer
    x = 117,998.44

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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.