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Finding the Fourth Proportional to 246,065.87, 339,569.78 and 137,168.78

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Solution

The fourth proportional to 246,065.87, 339,569.78 and 137,168.78 is: 189,292.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,065.87 : 339,569.78 = 137,168.78 : x
  2. Step 2: Convert to fraction form
    246,065.87/339,569.78 = 137,168.78/x
  3. Step 3: Cross multiply
    246,065.87x = 339,569.78 × 137,168.78
  4. Step 4: Simplify right side
    246,065.87x = 46,578,370,063.78
  5. Step 5: Solve for x
    x = 46,578,370,063.78/246,065.87
  6. Step 6: Final answer
    x = 189,292.28

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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.