Home / 121,888.36-168,204.69-68,173.25

Finding the Fourth Proportional to 121,888.36, 168,204.69 and 68,173.25

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Solution

The fourth proportional to 121,888.36, 168,204.69 and 68,173.25 is: 94,078.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,888.36 : 168,204.69 = 68,173.25 : x
  2. Step 2: Convert to fraction form
    121,888.36/168,204.69 = 68,173.25/x
  3. Step 3: Cross multiply
    121,888.36x = 168,204.69 × 68,173.25
  4. Step 4: Simplify right side
    121,888.36x = 11,467,060,382.54
  5. Step 5: Solve for x
    x = 11,467,060,382.54/121,888.36
  6. Step 6: Final answer
    x = 94,078.39

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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.