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Finding the Fourth Proportional to 123,716.20, 170,728.32 and 67,127.56

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Solution

The fourth proportional to 123,716.20, 170,728.32 and 67,127.56 is: 92,636.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,716.20 : 170,728.32 = 67,127.56 : x
  2. Step 2: Convert to fraction form
    123,716.20/170,728.32 = 67,127.56/x
  3. Step 3: Cross multiply
    123,716.20x = 170,728.32 × 67,127.56
  4. Step 4: Simplify right side
    123,716.20x = 11,460,575,544.50
  5. Step 5: Solve for x
    x = 11,460,575,544.50/123,716.20
  6. Step 6: Final answer
    x = 92,636.01

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.