Home / 123,949.12-171,051.20-67,361.28

Finding the Fourth Proportional to 123,949.12, 171,051.20 and 67,361.28

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Solution

The fourth proportional to 123,949.12, 171,051.20 and 67,361.28 is: 92,959.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,949.12 : 171,051.20 = 67,361.28 : x
  2. Step 2: Convert to fraction form
    123,949.12/171,051.20 = 67,361.28/x
  3. Step 3: Cross multiply
    123,949.12x = 171,051.20 × 67,361.28
  4. Step 4: Simplify right side
    123,949.12x = 11,522,227,777.54
  5. Step 5: Solve for x
    x = 11,522,227,777.54/123,949.12
  6. Step 6: Final answer
    x = 92,959.34

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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.