Home / 121,896.96-168,216.60-68,181.36

Finding the Fourth Proportional to 121,896.96, 168,216.60 and 68,181.36

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Solution

The fourth proportional to 121,896.96, 168,216.60 and 68,181.36 is: 94,089.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,896.96 : 168,216.60 = 68,181.36 : x
  2. Step 2: Convert to fraction form
    121,896.96/168,216.60 = 68,181.36/x
  3. Step 3: Cross multiply
    121,896.96x = 168,216.60 × 68,181.36
  4. Step 4: Simplify right side
    121,896.96x = 11,469,236,562.58
  5. Step 5: Solve for x
    x = 11,469,236,562.58/121,896.96
  6. Step 6: Final answer
    x = 94,089.60

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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.