Home / 121,361.20-181,944.60-51,182.80

Finding the Fourth Proportional to 121,361.20, 181,944.60 and 51,182.80

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Solution

The fourth proportional to 121,361.20, 181,944.60 and 51,182.80 is: 76,733.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,361.20 : 181,944.60 = 51,182.80 : x
  2. Step 2: Convert to fraction form
    121,361.20/181,944.60 = 51,182.80/x
  3. Step 3: Cross multiply
    121,361.20x = 181,944.60 × 51,182.80
  4. Step 4: Simplify right side
    121,361.20x = 9,312,434,072.88
  5. Step 5: Solve for x
    x = 9,312,434,072.88/121,361.20
  6. Step 6: Final answer
    x = 76,733.21

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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.