Home / 137,074.20-205,453.85-85,805.89

Finding the Fourth Proportional to 137,074.20, 205,453.85 and 85,805.89

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Solution

The fourth proportional to 137,074.20, 205,453.85 and 85,805.89 is: 128,610.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,074.20 : 205,453.85 = 85,805.89 : x
  2. Step 2: Convert to fraction form
    137,074.20/205,453.85 = 85,805.89/x
  3. Step 3: Cross multiply
    137,074.20x = 205,453.85 × 85,805.89
  4. Step 4: Simplify right side
    137,074.20x = 17,629,150,453.18
  5. Step 5: Solve for x
    x = 17,629,150,453.18/137,074.20
  6. Step 6: Final answer
    x = 128,610.27

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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.