Home / 121,821.20-182,709.44-55,245.32

Finding the Fourth Proportional to 121,821.20, 182,709.44 and 55,245.32

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Solution

The fourth proportional to 121,821.20, 182,709.44 and 55,245.32 is: 82,857.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,821.20 : 182,709.44 = 55,245.32 : x
  2. Step 2: Convert to fraction form
    121,821.20/182,709.44 = 55,245.32/x
  3. Step 3: Cross multiply
    121,821.20x = 182,709.44 × 55,245.32
  4. Step 4: Simplify right side
    121,821.20x = 10,093,841,479.82
  5. Step 5: Solve for x
    x = 10,093,841,479.82/121,821.20
  6. Step 6: Final answer
    x = 82,857.84

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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.