Home / 121,014,682.20-181,522,023.30-111,661,320.60

Finding the Fourth Proportional to 121,014,682.20, 181,522,023.30 and 111,661,320.60

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Solution

The fourth proportional to 121,014,682.20, 181,522,023.30 and 111,661,320.60 is: 167,491,980.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,014,682.20 : 181,522,023.30 = 111,661,320.60 : x
  2. Step 2: Convert to fraction form
    121,014,682.20/181,522,023.30 = 111,661,320.60/x
  3. Step 3: Cross multiply
    121,014,682.20x = 181,522,023.30 × 111,661,320.60
  4. Step 4: Simplify right side
    121,014,682.20x = 20,268,988,839,661,972
  5. Step 5: Solve for x
    x = 20,268,988,839,661,972/121,014,682.20
  6. Step 6: Final answer
    x = 167,491,980.90

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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.