Home / 128,223.44-192,315.70-45,098

Finding the Fourth Proportional to 128,223.44, 192,315.70 and 45,098

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Solution

The fourth proportional to 128,223.44, 192,315.70 and 45,098 is: 67,640.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,223.44 : 192,315.70 = 45,098 : x
  2. Step 2: Convert to fraction form
    128,223.44/192,315.70 = 45,098/x
  3. Step 3: Cross multiply
    128,223.44x = 192,315.70 × 45,098
  4. Step 4: Simplify right side
    128,223.44x = 8,673,053,438.60
  5. Step 5: Solve for x
    x = 8,673,053,438.60/128,223.44
  6. Step 6: Final answer
    x = 67,640.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.