Home / 121,519.58-167,676.90-81,168.62

Finding the Fourth Proportional to 121,519.58, 167,676.90 and 81,168.62

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Solution

The fourth proportional to 121,519.58, 167,676.90 and 81,168.62 is: 111,999.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,519.58 : 167,676.90 = 81,168.62 : x
  2. Step 2: Convert to fraction form
    121,519.58/167,676.90 = 81,168.62/x
  3. Step 3: Cross multiply
    121,519.58x = 167,676.90 × 81,168.62
  4. Step 4: Simplify right side
    121,519.58x = 13,610,102,578.88
  5. Step 5: Solve for x
    x = 13,610,102,578.88/121,519.58
  6. Step 6: Final answer
    x = 111,999.26

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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.