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Finding the Fourth Proportional to 123,374.88, 170,257.41 and 69,660

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Solution

The fourth proportional to 123,374.88, 170,257.41 and 69,660 is: 96,130.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,374.88 : 170,257.41 = 69,660 : x
  2. Step 2: Convert to fraction form
    123,374.88/170,257.41 = 69,660/x
  3. Step 3: Cross multiply
    123,374.88x = 170,257.41 × 69,660
  4. Step 4: Simplify right side
    123,374.88x = 11,860,131,180.60
  5. Step 5: Solve for x
    x = 11,860,131,180.60/123,374.88
  6. Step 6: Final answer
    x = 96,130.84

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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.