Home / 128,500,687.44-192,821,753.88-55,718,027.28

Finding the Fourth Proportional to 128,500,687.44, 192,821,753.88 and 55,718,027.28

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Solution

The fourth proportional to 128,500,687.44, 192,821,753.88 and 55,718,027.28 is: 83,607,706.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,500,687.44 : 192,821,753.88 = 55,718,027.28 : x
  2. Step 2: Convert to fraction form
    128,500,687.44/192,821,753.88 = 55,718,027.28/x
  3. Step 3: Cross multiply
    128,500,687.44x = 192,821,753.88 × 55,718,027.28
  4. Step 4: Simplify right side
    128,500,687.44x = 10,743,647,742,863,286
  5. Step 5: Solve for x
    x = 10,743,647,742,863,286/128,500,687.44
  6. Step 6: Final answer
    x = 83,607,706.36

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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.