Home / 100,880.44-139,183.62-57,265.72

Finding the Fourth Proportional to 100,880.44, 139,183.62 and 57,265.72

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Solution

The fourth proportional to 100,880.44, 139,183.62 and 57,265.72 is: 79,008.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,880.44 : 139,183.62 = 57,265.72 : x
  2. Step 2: Convert to fraction form
    100,880.44/139,183.62 = 57,265.72/x
  3. Step 3: Cross multiply
    100,880.44x = 139,183.62 × 57,265.72
  4. Step 4: Simplify right side
    100,880.44x = 7,970,450,211.51
  5. Step 5: Solve for x
    x = 7,970,450,211.51/100,880.44
  6. Step 6: Final answer
    x = 79,008.88

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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.