Home / 123,428.44-170,331.06-66,840.04

Finding the Fourth Proportional to 123,428.44, 170,331.06 and 66,840.04

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Solution

The fourth proportional to 123,428.44, 170,331.06 and 66,840.04 is: 92,239.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,428.44 : 170,331.06 = 66,840.04 : x
  2. Step 2: Convert to fraction form
    123,428.44/170,331.06 = 66,840.04/x
  3. Step 3: Cross multiply
    123,428.44x = 170,331.06 × 66,840.04
  4. Step 4: Simplify right side
    123,428.44x = 11,384,934,863.64
  5. Step 5: Solve for x
    x = 11,384,934,863.64/123,428.44
  6. Step 6: Final answer
    x = 92,239.15

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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.