Home / 120,902.97-166,927.47-108,116.31

Finding the Fourth Proportional to 120,902.97, 166,927.47 and 108,116.31

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Solution

The fourth proportional to 120,902.97, 166,927.47 and 108,116.31 is: 149,273.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,902.97 : 166,927.47 = 108,116.31 : x
  2. Step 2: Convert to fraction form
    120,902.97/166,927.47 = 108,116.31/x
  3. Step 3: Cross multiply
    120,902.97x = 166,927.47 × 108,116.31
  4. Step 4: Simplify right side
    120,902.97x = 18,047,582,094.04
  5. Step 5: Solve for x
    x = 18,047,582,094.04/120,902.97
  6. Step 6: Final answer
    x = 149,273.27

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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.