Home / 121,824.54-168,133.29-68,112.72

Finding the Fourth Proportional to 121,824.54, 168,133.29 and 68,112.72

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Solution

The fourth proportional to 121,824.54, 168,133.29 and 68,112.72 is: 94,004.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,824.54 : 168,133.29 = 68,112.72 : x
  2. Step 2: Convert to fraction form
    121,824.54/168,133.29 = 68,112.72/x
  3. Step 3: Cross multiply
    121,824.54x = 168,133.29 × 68,112.72
  4. Step 4: Simplify right side
    121,824.54x = 11,452,015,704.45
  5. Step 5: Solve for x
    x = 11,452,015,704.45/121,824.54
  6. Step 6: Final answer
    x = 94,004.18

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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.