Home / 117,028.80-161,546.40-74,649.60

Finding the Fourth Proportional to 117,028.80, 161,546.40 and 74,649.60

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Solution

The fourth proportional to 117,028.80, 161,546.40 and 74,649.60 is: 103,046.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,028.80 : 161,546.40 = 74,649.60 : x
  2. Step 2: Convert to fraction form
    117,028.80/161,546.40 = 74,649.60/x
  3. Step 3: Cross multiply
    117,028.80x = 161,546.40 × 74,649.60
  4. Step 4: Simplify right side
    117,028.80x = 12,059,374,141.44
  5. Step 5: Solve for x
    x = 12,059,374,141.44/117,028.80
  6. Step 6: Final answer
    x = 103,046.21

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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.