Home / 121,104.06-167,028.93-78,676.26

Finding the Fourth Proportional to 121,104.06, 167,028.93 and 78,676.26

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Solution

The fourth proportional to 121,104.06, 167,028.93 and 78,676.26 is: 108,511.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,104.06 : 167,028.93 = 78,676.26 : x
  2. Step 2: Convert to fraction form
    121,104.06/167,028.93 = 78,676.26/x
  3. Step 3: Cross multiply
    121,104.06x = 167,028.93 × 78,676.26
  4. Step 4: Simplify right side
    121,104.06x = 13,141,211,524.20
  5. Step 5: Solve for x
    x = 13,141,211,524.20/121,104.06
  6. Step 6: Final answer
    x = 108,511.73

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1.5x scale

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.