Home / 140,379,639.13-193,658,620.78-90,836,005.73

Finding the Fourth Proportional to 140,379,639.13, 193,658,620.78 and 90,836,005.73

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Solution

The fourth proportional to 140,379,639.13, 193,658,620.78 and 90,836,005.73 is: 125,311,446.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,379,639.13 : 193,658,620.78 = 90,836,005.73 : x
  2. Step 2: Convert to fraction form
    140,379,639.13/193,658,620.78 = 90,836,005.73/x
  3. Step 3: Cross multiply
    140,379,639.13x = 193,658,620.78 × 90,836,005.73
  4. Step 4: Simplify right side
    140,379,639.13x = 17,591,175,586,835,978
  5. Step 5: Solve for x
    x = 17,591,175,586,835,978/140,379,639.13
  6. Step 6: Final answer
    x = 125,311,446.13

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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.