Home / 123,697.28-170,522.56-81,181.44

Finding the Fourth Proportional to 123,697.28, 170,522.56 and 81,181.44

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Solution

The fourth proportional to 123,697.28, 170,522.56 and 81,181.44 is: 111,912.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,697.28 : 170,522.56 = 81,181.44 : x
  2. Step 2: Convert to fraction form
    123,697.28/170,522.56 = 81,181.44/x
  3. Step 3: Cross multiply
    123,697.28x = 170,522.56 × 81,181.44
  4. Step 4: Simplify right side
    123,697.28x = 13,843,266,973.29
  5. Step 5: Solve for x
    x = 13,843,266,973.29/123,697.28
  6. Step 6: Final answer
    x = 111,912.46

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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.