Home / 121,921.37-168,244.71-68,196.02

Finding the Fourth Proportional to 121,921.37, 168,244.71 and 68,196.02

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Solution

The fourth proportional to 121,921.37, 168,244.71 and 68,196.02 is: 94,106.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,921.37 : 168,244.71 = 68,196.02 : x
  2. Step 2: Convert to fraction form
    121,921.37/168,244.71 = 68,196.02/x
  3. Step 3: Cross multiply
    121,921.37x = 168,244.71 × 68,196.02
  4. Step 4: Simplify right side
    121,921.37x = 11,473,619,608.05
  5. Step 5: Solve for x
    x = 11,473,619,608.05/121,921.37
  6. Step 6: Final answer
    x = 94,106.71

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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.