Home / 140,696.30-194,153.18-77,021.78

Finding the Fourth Proportional to 140,696.30, 194,153.18 and 77,021.78

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Solution

The fourth proportional to 140,696.30, 194,153.18 and 77,021.78 is: 106,285.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,696.30 : 194,153.18 = 77,021.78 : x
  2. Step 2: Convert to fraction form
    140,696.30/194,153.18 = 77,021.78/x
  3. Step 3: Cross multiply
    140,696.30x = 194,153.18 × 77,021.78
  4. Step 4: Simplify right side
    140,696.30x = 14,954,023,516.26
  5. Step 5: Solve for x
    x = 14,954,023,516.26/140,696.30
  6. Step 6: Final answer
    x = 106,285.83

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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.