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Finding the Fourth Proportional to 117,258.88, 161,820.24 and 71,961.88

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Solution

The fourth proportional to 117,258.88, 161,820.24 and 71,961.88 is: 99,309.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,258.88 : 161,820.24 = 71,961.88 : x
  2. Step 2: Convert to fraction form
    117,258.88/161,820.24 = 71,961.88/x
  3. Step 3: Cross multiply
    117,258.88x = 161,820.24 × 71,961.88
  4. Step 4: Simplify right side
    117,258.88x = 11,644,888,692.45
  5. Step 5: Solve for x
    x = 11,644,888,692.45/117,258.88
  6. Step 6: Final answer
    x = 99,309.23

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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.