Home / 123,390.41-170,278.00-66,801.38

Finding the Fourth Proportional to 123,390.41, 170,278.00 and 66,801.38

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Solution

The fourth proportional to 123,390.41, 170,278.00 and 66,801.38 is: 92,185.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,390.41 : 170,278.00 = 66,801.38 : x
  2. Step 2: Convert to fraction form
    123,390.41/170,278.00 = 66,801.38/x
  3. Step 3: Cross multiply
    123,390.41x = 170,278.00 × 66,801.38
  4. Step 4: Simplify right side
    123,390.41x = 11,374,804,365.25
  5. Step 5: Solve for x
    x = 11,374,804,365.25/123,390.41
  6. Step 6: Final answer
    x = 92,185.49

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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.