Home / 121,788.62-168,056.76-68,072.41

Finding the Fourth Proportional to 121,788.62, 168,056.76 and 68,072.41

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Solution

The fourth proportional to 121,788.62, 168,056.76 and 68,072.41 is: 93,933.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,788.62 : 168,056.76 = 68,072.41 : x
  2. Step 2: Convert to fraction form
    121,788.62/168,056.76 = 68,072.41/x
  3. Step 3: Cross multiply
    121,788.62x = 168,056.76 × 68,072.41
  4. Step 4: Simplify right side
    121,788.62x = 11,440,028,669.99
  5. Step 5: Solve for x
    x = 11,440,028,669.99/121,788.62
  6. Step 6: Final answer
    x = 93,933.48

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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.