Home / 143,118,271,778.76-197,512,051,360.50-78,888,851,220.60

Finding the Fourth Proportional to 143,118,271,778.76, 197,512,051,360.50 and 78,888,851,220.60

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Solution

The fourth proportional to 143,118,271,778.76, 197,512,051,360.50 and 78,888,851,220.60 is: 108,871,485,383.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,118,271,778.76 : 197,512,051,360.50 = 78,888,851,220.60 : x
  2. Step 2: Convert to fraction form
    143,118,271,778.76/197,512,051,360.50 = 78,888,851,220.60/x
  3. Step 3: Cross multiply
    143,118,271,778.76x = 197,512,051,360.50 × 78,888,851,220.60
  4. Step 4: Simplify right side
    143,118,271,778.76x = 15,581,498,834,053,991,759,872
  5. Step 5: Solve for x
    x = 15,581,498,834,053,991,759,872/143,118,271,778.76
  6. Step 6: Final answer
    x = 108,871,485,383.37

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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.