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Finding the Fourth Proportional to 121,361.70, 181,945.35 and 51,183.30

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Solution

The fourth proportional to 121,361.70, 181,945.35 and 51,183.30 is: 76,733.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,361.70 : 181,945.35 = 51,183.30 : x
  2. Step 2: Convert to fraction form
    121,361.70/181,945.35 = 51,183.30/x
  3. Step 3: Cross multiply
    121,361.70x = 181,945.35 × 51,183.30
  4. Step 4: Simplify right side
    121,361.70x = 9,312,563,432.66
  5. Step 5: Solve for x
    x = 9,312,563,432.66/121,361.70
  6. Step 6: Final answer
    x = 76,733.96

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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.