Home / 121,288.20-181,997.10-54,738.60

Finding the Fourth Proportional to 121,288.20, 181,997.10 and 54,738.60

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Solution

The fourth proportional to 121,288.20, 181,997.10 and 54,738.60 is: 82,137.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,288.20 : 181,997.10 = 54,738.60 : x
  2. Step 2: Convert to fraction form
    121,288.20/181,997.10 = 54,738.60/x
  3. Step 3: Cross multiply
    121,288.20x = 181,997.10 × 54,738.60
  4. Step 4: Simplify right side
    121,288.20x = 9,962,266,458.06
  5. Step 5: Solve for x
    x = 9,962,266,458.06/121,288.20
  6. Step 6: Final answer
    x = 82,137.14

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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.