Home / 140,640.68-194,083.81-76,977.92

Finding the Fourth Proportional to 140,640.68, 194,083.81 and 76,977.92

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Solution

The fourth proportional to 140,640.68, 194,083.81 and 76,977.92 is: 106,229.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,640.68 : 194,083.81 = 76,977.92 : x
  2. Step 2: Convert to fraction form
    140,640.68/194,083.81 = 76,977.92/x
  3. Step 3: Cross multiply
    140,640.68x = 194,083.81 × 76,977.92
  4. Step 4: Simplify right side
    140,640.68x = 14,940,166,836.61
  5. Step 5: Solve for x
    x = 14,940,166,836.61/140,640.68
  6. Step 6: Final answer
    x = 106,229.35

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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.