Home / 142,003,089,053.72-195,970,422,885.81-78,638,315,741.72

Finding the Fourth Proportional to 142,003,089,053.72, 195,970,422,885.81 and 78,638,315,741.72

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Solution

The fourth proportional to 142,003,089,053.72, 195,970,422,885.81 and 78,638,315,741.72 is: 108,524,286,997.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,003,089,053.72 : 195,970,422,885.81 = 78,638,315,741.72 : x
  2. Step 2: Convert to fraction form
    142,003,089,053.72/195,970,422,885.81 = 78,638,315,741.72/x
  3. Step 3: Cross multiply
    142,003,089,053.72x = 195,970,422,885.81 × 78,638,315,741.72
  4. Step 4: Simplify right side
    142,003,089,053.72x = 15,410,783,990,932,326,842,368
  5. Step 5: Solve for x
    x = 15,410,783,990,932,326,842,368/142,003,089,053.72
  6. Step 6: Final answer
    x = 108,524,286,997.04

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1.5x scale

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.