Home / 121,769.11-168,042.36-68,056.39

Finding the Fourth Proportional to 121,769.11, 168,042.36 and 68,056.39

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Solution

The fourth proportional to 121,769.11, 168,042.36 and 68,056.39 is: 93,918.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,769.11 : 168,042.36 = 68,056.39 : x
  2. Step 2: Convert to fraction form
    121,769.11/168,042.36 = 68,056.39/x
  3. Step 3: Cross multiply
    121,769.11x = 168,042.36 × 68,056.39
  4. Step 4: Simplify right side
    121,769.11x = 11,436,356,388.68
  5. Step 5: Solve for x
    x = 11,436,356,388.68/121,769.11
  6. Step 6: Final answer
    x = 93,918.37

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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.