Home / 121,245.22-167,387.80-81,027.10

Finding the Fourth Proportional to 121,245.22, 167,387.80 and 81,027.10

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Solution

The fourth proportional to 121,245.22, 167,387.80 and 81,027.10 is: 111,863.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,245.22 : 167,387.80 = 81,027.10 : x
  2. Step 2: Convert to fraction form
    121,245.22/167,387.80 = 81,027.10/x
  3. Step 3: Cross multiply
    121,245.22x = 167,387.80 × 81,027.10
  4. Step 4: Simplify right side
    121,245.22x = 13,562,947,172.44
  5. Step 5: Solve for x
    x = 13,562,947,172.44/121,245.22
  6. Step 6: Final answer
    x = 111,863.77

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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.