Home / 108,121.87-149,198.25-69,882.58

Finding the Fourth Proportional to 108,121.87, 149,198.25 and 69,882.58

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Solution

The fourth proportional to 108,121.87, 149,198.25 and 69,882.58 is: 96,431.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,121.87 : 149,198.25 = 69,882.58 : x
  2. Step 2: Convert to fraction form
    108,121.87/149,198.25 = 69,882.58/x
  3. Step 3: Cross multiply
    108,121.87x = 149,198.25 × 69,882.58
  4. Step 4: Simplify right side
    108,121.87x = 10,426,358,641.49
  5. Step 5: Solve for x
    x = 10,426,358,641.49/108,121.87
  6. Step 6: Final answer
    x = 96,431.54

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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.