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Finding the Fourth Proportional to 121,533.90, 167,716.74 and 67,819.25

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Solution

The fourth proportional to 121,533.90, 167,716.74 and 67,819.25 is: 93,590.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,533.90 : 167,716.74 = 67,819.25 : x
  2. Step 2: Convert to fraction form
    121,533.90/167,716.74 = 67,819.25/x
  3. Step 3: Cross multiply
    121,533.90x = 167,716.74 × 67,819.25
  4. Step 4: Simplify right side
    121,533.90x = 11,374,422,680.66
  5. Step 5: Solve for x
    x = 11,374,422,680.66/121,533.90
  6. Step 6: Final answer
    x = 93,590.53

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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.