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Finding the Fourth Proportional to 121,744.44, 168,006.95 and 68,029.51

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Solution

The fourth proportional to 121,744.44, 168,006.95 and 68,029.51 is: 93,880.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,744.44 : 168,006.95 = 68,029.51 : x
  2. Step 2: Convert to fraction form
    121,744.44/168,006.95 = 68,029.51/x
  3. Step 3: Cross multiply
    121,744.44x = 168,006.95 × 68,029.51
  4. Step 4: Simplify right side
    121,744.44x = 11,429,429,645.06
  5. Step 5: Solve for x
    x = 11,429,429,645.06/121,744.44
  6. Step 6: Final answer
    x = 93,880.51

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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.