Home / 142,003,089,052.56-195,970,422,884.22-78,638,315,740.56

Finding the Fourth Proportional to 142,003,089,052.56, 195,970,422,884.22 and 78,638,315,740.56

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Solution

The fourth proportional to 142,003,089,052.56, 195,970,422,884.22 and 78,638,315,740.56 is: 108,524,286,995.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,003,089,052.56 : 195,970,422,884.22 = 78,638,315,740.56 : x
  2. Step 2: Convert to fraction form
    142,003,089,052.56/195,970,422,884.22 = 78,638,315,740.56/x
  3. Step 3: Cross multiply
    142,003,089,052.56x = 195,970,422,884.22 × 78,638,315,740.56
  4. Step 4: Simplify right side
    142,003,089,052.56x = 15,410,783,990,580,357,627,904
  5. Step 5: Solve for x
    x = 15,410,783,990,580,357,627,904/142,003,089,052.56
  6. Step 6: Final answer
    x = 108,524,286,995.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.