Home / 140,640.55-194,083.64-76,977.79

Finding the Fourth Proportional to 140,640.55, 194,083.64 and 76,977.79

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Solution

The fourth proportional to 140,640.55, 194,083.64 and 76,977.79 is: 106,229.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,640.55 : 194,083.64 = 76,977.79 : x
  2. Step 2: Convert to fraction form
    140,640.55/194,083.64 = 76,977.79/x
  3. Step 3: Cross multiply
    140,640.55x = 194,083.64 × 76,977.79
  4. Step 4: Simplify right side
    140,640.55x = 14,940,129,297.47
  5. Step 5: Solve for x
    x = 14,940,129,297.47/140,640.55
  6. Step 6: Final answer
    x = 106,229.17

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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.