Home / 102,789.14-141,872.70-66,916.66

Finding the Fourth Proportional to 102,789.14, 141,872.70 and 66,916.66

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Solution

The fourth proportional to 102,789.14, 141,872.70 and 66,916.66 is: 92,360.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,789.14 : 141,872.70 = 66,916.66 : x
  2. Step 2: Convert to fraction form
    102,789.14/141,872.70 = 66,916.66/x
  3. Step 3: Cross multiply
    102,789.14x = 141,872.70 × 66,916.66
  4. Step 4: Simplify right side
    102,789.14x = 9,493,647,229.18
  5. Step 5: Solve for x
    x = 9,493,647,229.18/102,789.14
  6. Step 6: Final answer
    x = 92,360.41

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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.