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Finding the Fourth Proportional to 123,657.57, 170,647.46 and 69,941.43

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Solution

The fourth proportional to 123,657.57, 170,647.46 and 69,941.43 is: 96,519.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,657.57 : 170,647.46 = 69,941.43 : x
  2. Step 2: Convert to fraction form
    123,657.57/170,647.46 = 69,941.43/x
  3. Step 3: Cross multiply
    123,657.57x = 170,647.46 × 69,941.43
  4. Step 4: Simplify right side
    123,657.57x = 11,935,327,028.56
  5. Step 5: Solve for x
    x = 11,935,327,028.56/123,657.57
  6. Step 6: Final answer
    x = 96,519.18

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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.