Home / 123,579.56-170,540.70-66,991.34

Finding the Fourth Proportional to 123,579.56, 170,540.70 and 66,991.34

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Solution

The fourth proportional to 123,579.56, 170,540.70 and 66,991.34 is: 92,448.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,579.56 : 170,540.70 = 66,991.34 : x
  2. Step 2: Convert to fraction form
    123,579.56/170,540.70 = 66,991.34/x
  3. Step 3: Cross multiply
    123,579.56x = 170,540.70 × 66,991.34
  4. Step 4: Simplify right side
    123,579.56x = 11,424,750,017.54
  5. Step 5: Solve for x
    x = 11,424,750,017.54/123,579.56
  6. Step 6: Final answer
    x = 92,448.54

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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.