Home / 138,427.23-207,542.43-66,297.54

Finding the Fourth Proportional to 138,427.23, 207,542.43 and 66,297.54

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Solution

The fourth proportional to 138,427.23, 207,542.43 and 66,297.54 is: 99,399.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,427.23 : 207,542.43 = 66,297.54 : x
  2. Step 2: Convert to fraction form
    138,427.23/207,542.43 = 66,297.54/x
  3. Step 3: Cross multiply
    138,427.23x = 207,542.43 × 66,297.54
  4. Step 4: Simplify right side
    138,427.23x = 13,759,552,554.62
  5. Step 5: Solve for x
    x = 13,759,552,554.62/138,427.23
  6. Step 6: Final answer
    x = 99,399.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.