Home / 126,728.20-190,092.30-74,110.60

Finding the Fourth Proportional to 126,728.20, 190,092.30 and 74,110.60

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Solution

The fourth proportional to 126,728.20, 190,092.30 and 74,110.60 is: 111,165.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,728.20 : 190,092.30 = 74,110.60 : x
  2. Step 2: Convert to fraction form
    126,728.20/190,092.30 = 74,110.60/x
  3. Step 3: Cross multiply
    126,728.20x = 190,092.30 × 74,110.60
  4. Step 4: Simplify right side
    126,728.20x = 14,087,854,408.38
  5. Step 5: Solve for x
    x = 14,087,854,408.38/126,728.20
  6. Step 6: Final answer
    x = 111,165.90

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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.