Home / 165,766.15-248,485.20-81,457.30

Finding the Fourth Proportional to 165,766.15, 248,485.20 and 81,457.30

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Solution

The fourth proportional to 165,766.15, 248,485.20 and 81,457.30 is: 122,105.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,766.15 : 248,485.20 = 81,457.30 : x
  2. Step 2: Convert to fraction form
    165,766.15/248,485.20 = 81,457.30/x
  3. Step 3: Cross multiply
    165,766.15x = 248,485.20 × 81,457.30
  4. Step 4: Simplify right side
    165,766.15x = 20,240,933,481.96
  5. Step 5: Solve for x
    x = 20,240,933,481.96/165,766.15
  6. Step 6: Final answer
    x = 122,105.35

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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.