Home / 142,003,089,037.20-195,970,422,863.02-78,638,315,725.18

Finding the Fourth Proportional to 142,003,089,037.20, 195,970,422,863.02 and 78,638,315,725.18

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Solution

The fourth proportional to 142,003,089,037.20, 195,970,422,863.02 and 78,638,315,725.18 is: 108,524,286,974.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,003,089,037.20 : 195,970,422,863.02 = 78,638,315,725.18 : x
  2. Step 2: Convert to fraction form
    142,003,089,037.20/195,970,422,863.02 = 78,638,315,725.18/x
  3. Step 3: Cross multiply
    142,003,089,037.20x = 195,970,422,863.02 × 78,638,315,725.18
  4. Step 4: Simplify right side
    142,003,089,037.20x = 15,410,783,985,899,197,693,952
  5. Step 5: Solve for x
    x = 15,410,783,985,899,197,693,952/142,003,089,037.20
  6. Step 6: Final answer
    x = 108,524,286,974.22

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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.