Home / 121,498.20-182,028.60-99,190.80

Finding the Fourth Proportional to 121,498.20, 182,028.60 and 99,190.80

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Solution

The fourth proportional to 121,498.20, 182,028.60 and 99,190.80 is: 148,607.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,498.20 : 182,028.60 = 99,190.80 : x
  2. Step 2: Convert to fraction form
    121,498.20/182,028.60 = 99,190.80/x
  3. Step 3: Cross multiply
    121,498.20x = 182,028.60 × 99,190.80
  4. Step 4: Simplify right side
    121,498.20x = 18,055,562,456.88
  5. Step 5: Solve for x
    x = 18,055,562,456.88/121,498.20
  6. Step 6: Final answer
    x = 148,607.65

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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.