Home / 121,768.33-168,039.75-68,053.30

Finding the Fourth Proportional to 121,768.33, 168,039.75 and 68,053.30

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Solution

The fourth proportional to 121,768.33, 168,039.75 and 68,053.30 is: 93,913.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,768.33 : 168,039.75 = 68,053.30 : x
  2. Step 2: Convert to fraction form
    121,768.33/168,039.75 = 68,053.30/x
  3. Step 3: Cross multiply
    121,768.33x = 168,039.75 × 68,053.30
  4. Step 4: Simplify right side
    121,768.33x = 11,435,659,518.68
  5. Step 5: Solve for x
    x = 11,435,659,518.68/121,768.33
  6. Step 6: Final answer
    x = 93,913.25

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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.