Home / 121,415.20-182,025.60-51,236.80

Finding the Fourth Proportional to 121,415.20, 182,025.60 and 51,236.80

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Solution

The fourth proportional to 121,415.20, 182,025.60 and 51,236.80 is: 76,814.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,415.20 : 182,025.60 = 51,236.80 : x
  2. Step 2: Convert to fraction form
    121,415.20/182,025.60 = 51,236.80/x
  3. Step 3: Cross multiply
    121,415.20x = 182,025.60 × 51,236.80
  4. Step 4: Simplify right side
    121,415.20x = 9,326,409,262.08
  5. Step 5: Solve for x
    x = 9,326,409,262.08/121,415.20
  6. Step 6: Final answer
    x = 76,814.18

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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.