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Finding the Fourth Proportional to 121,881.78, 182,847.27 and 71,997.66

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Solution

The fourth proportional to 121,881.78, 182,847.27 and 71,997.66 is: 108,011.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,881.78 : 182,847.27 = 71,997.66 : x
  2. Step 2: Convert to fraction form
    121,881.78/182,847.27 = 71,997.66/x
  3. Step 3: Cross multiply
    121,881.78x = 182,847.27 × 71,997.66
  4. Step 4: Simplify right side
    121,881.78x = 13,164,575,577.39
  5. Step 5: Solve for x
    x = 13,164,575,577.39/121,881.78
  6. Step 6: Final answer
    x = 108,011.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.