Home / 121,910.35-168,228.33-68,186.05

Finding the Fourth Proportional to 121,910.35, 168,228.33 and 68,186.05

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Solution

The fourth proportional to 121,910.35, 168,228.33 and 68,186.05 is: 94,092.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,910.35 : 168,228.33 = 68,186.05 : x
  2. Step 2: Convert to fraction form
    121,910.35/168,228.33 = 68,186.05/x
  3. Step 3: Cross multiply
    121,910.35x = 168,228.33 × 68,186.05
  4. Step 4: Simplify right side
    121,910.35x = 11,470,825,320.80
  5. Step 5: Solve for x
    x = 11,470,825,320.80/121,910.35
  6. Step 6: Final answer
    x = 94,092.30

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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.