Home / 126,722.40-190,083.60-80,181.60

Finding the Fourth Proportional to 126,722.40, 190,083.60 and 80,181.60

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Solution

The fourth proportional to 126,722.40, 190,083.60 and 80,181.60 is: 120,272.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,722.40 : 190,083.60 = 80,181.60 : x
  2. Step 2: Convert to fraction form
    126,722.40/190,083.60 = 80,181.60/x
  3. Step 3: Cross multiply
    126,722.40x = 190,083.60 × 80,181.60
  4. Step 4: Simplify right side
    126,722.40x = 15,241,207,181.76
  5. Step 5: Solve for x
    x = 15,241,207,181.76/126,722.40
  6. Step 6: Final answer
    x = 120,272.40

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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.