Home / 121,276,997.20-181,915,495.80-111,923,635.60

Finding the Fourth Proportional to 121,276,997.20, 181,915,495.80 and 111,923,635.60

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Solution

The fourth proportional to 121,276,997.20, 181,915,495.80 and 111,923,635.60 is: 167,885,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,276,997.20 : 181,915,495.80 = 111,923,635.60 : x
  2. Step 2: Convert to fraction form
    121,276,997.20/181,915,495.80 = 111,923,635.60/x
  3. Step 3: Cross multiply
    121,276,997.20x = 181,915,495.80 × 111,923,635.60
  4. Step 4: Simplify right side
    121,276,997.20x = 20,360,643,661,912,532
  5. Step 5: Solve for x
    x = 20,360,643,661,912,532/121,276,997.20
  6. Step 6: Final answer
    x = 167,885,453.40

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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.