Home / 81,721,491,331.60-122,582,236,997.40-65,191,550,467.60

Finding the Fourth Proportional to 81,721,491,331.60, 122,582,236,997.40 and 65,191,550,467.60

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Solution

The fourth proportional to 81,721,491,331.60, 122,582,236,997.40 and 65,191,550,467.60 is: 97,787,325,701.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,721,491,331.60 : 122,582,236,997.40 = 65,191,550,467.60 : x
  2. Step 2: Convert to fraction form
    81,721,491,331.60/122,582,236,997.40 = 65,191,550,467.60/x
  3. Step 3: Cross multiply
    81,721,491,331.60x = 122,582,236,997.40 × 65,191,550,467.60
  4. Step 4: Simplify right side
    81,721,491,331.60x = 7,991,326,089,647,305,523,200
  5. Step 5: Solve for x
    x = 7,991,326,089,647,305,523,200/81,721,491,331.60
  6. Step 6: Final answer
    x = 97,787,325,701.40

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Double scale
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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.