Home / 121,491.90-167,591.43-71,181.18

Finding the Fourth Proportional to 121,491.90, 167,591.43 and 71,181.18

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Solution

The fourth proportional to 121,491.90, 167,591.43 and 71,181.18 is: 98,190.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,491.90 : 167,591.43 = 71,181.18 : x
  2. Step 2: Convert to fraction form
    121,491.90/167,591.43 = 71,181.18/x
  3. Step 3: Cross multiply
    121,491.90x = 167,591.43 × 71,181.18
  4. Step 4: Simplify right side
    121,491.90x = 11,929,355,745.29
  5. Step 5: Solve for x
    x = 11,929,355,745.29/121,491.90
  6. Step 6: Final answer
    x = 98,190.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.