Home / 131,408.20-197,112.30-121,270.60

Finding the Fourth Proportional to 131,408.20, 197,112.30 and 121,270.60

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Solution

The fourth proportional to 131,408.20, 197,112.30 and 121,270.60 is: 181,905.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,408.20 : 197,112.30 = 121,270.60 : x
  2. Step 2: Convert to fraction form
    131,408.20/197,112.30 = 121,270.60/x
  3. Step 3: Cross multiply
    131,408.20x = 197,112.30 × 121,270.60
  4. Step 4: Simplify right side
    131,408.20x = 23,903,926,888.38
  5. Step 5: Solve for x
    x = 23,903,926,888.38/131,408.20
  6. Step 6: Final answer
    x = 181,905.90

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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.