Home / 121,822.78-168,116.64-68,110.75

Finding the Fourth Proportional to 121,822.78, 168,116.64 and 68,110.75

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Solution

The fourth proportional to 121,822.78, 168,116.64 and 68,110.75 is: 93,993.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,822.78 : 168,116.64 = 68,110.75 : x
  2. Step 2: Convert to fraction form
    121,822.78/168,116.64 = 68,110.75/x
  3. Step 3: Cross multiply
    121,822.78x = 168,116.64 × 68,110.75
  4. Step 4: Simplify right side
    121,822.78x = 11,450,550,437.88
  5. Step 5: Solve for x
    x = 11,450,550,437.88/121,822.78
  6. Step 6: Final answer
    x = 93,993.51

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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.