Home / 126,989.45-190,317.03-70,855.98

Finding the Fourth Proportional to 126,989.45, 190,317.03 and 70,855.98

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Solution

The fourth proportional to 126,989.45, 190,317.03 and 70,855.98 is: 106,190.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,989.45 : 190,317.03 = 70,855.98 : x
  2. Step 2: Convert to fraction form
    126,989.45/190,317.03 = 70,855.98/x
  3. Step 3: Cross multiply
    126,989.45x = 190,317.03 × 70,855.98
  4. Step 4: Simplify right side
    126,989.45x = 13,485,099,671.34
  5. Step 5: Solve for x
    x = 13,485,099,671.34/126,989.45
  6. Step 6: Final answer
    x = 106,190.71

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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.