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Finding the Fourth Proportional to 118,971.88, 164,181.46 and 68,670.84

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Solution

The fourth proportional to 118,971.88, 164,181.46 and 68,670.84 is: 94,765.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,971.88 : 164,181.46 = 68,670.84 : x
  2. Step 2: Convert to fraction form
    118,971.88/164,181.46 = 68,670.84/x
  3. Step 3: Cross multiply
    118,971.88x = 164,181.46 × 68,670.84
  4. Step 4: Simplify right side
    118,971.88x = 11,274,478,770.63
  5. Step 5: Solve for x
    x = 11,274,478,770.63/118,971.88
  6. Step 6: Final answer
    x = 94,765.91

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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.