Home / 140,639.82-194,083.02-76,977.96

Finding the Fourth Proportional to 140,639.82, 194,083.02 and 76,977.96

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Solution

The fourth proportional to 140,639.82, 194,083.02 and 76,977.96 is: 106,229.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,639.82 : 194,083.02 = 76,977.96 : x
  2. Step 2: Convert to fraction form
    140,639.82/194,083.02 = 76,977.96/x
  3. Step 3: Cross multiply
    140,639.82x = 194,083.02 × 76,977.96
  4. Step 4: Simplify right side
    140,639.82x = 14,940,114,950.24
  5. Step 5: Solve for x
    x = 14,940,114,950.24/140,639.82
  6. Step 6: Final answer
    x = 106,229.62

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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.