Home / 126,991.20-190,319.65-70,857.73

Finding the Fourth Proportional to 126,991.20, 190,319.65 and 70,857.73

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Solution

The fourth proportional to 126,991.20, 190,319.65 and 70,857.73 is: 106,193.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,991.20 : 190,319.65 = 70,857.73 : x
  2. Step 2: Convert to fraction form
    126,991.20/190,319.65 = 70,857.73/x
  3. Step 3: Cross multiply
    126,991.20x = 190,319.65 × 70,857.73
  4. Step 4: Simplify right side
    126,991.20x = 13,485,618,373.39
  5. Step 5: Solve for x
    x = 13,485,618,373.39/126,991.20
  6. Step 6: Final answer
    x = 106,193.33

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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.