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Finding the Fourth Proportional to 155,757.62, 214,945.31 and 84,137.62

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Solution

The fourth proportional to 155,757.62, 214,945.31 and 84,137.62 is: 116,109.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,757.62 : 214,945.31 = 84,137.62 : x
  2. Step 2: Convert to fraction form
    155,757.62/214,945.31 = 84,137.62/x
  3. Step 3: Cross multiply
    155,757.62x = 214,945.31 × 84,137.62
  4. Step 4: Simplify right side
    155,757.62x = 18,084,986,813.56
  5. Step 5: Solve for x
    x = 18,084,986,813.56/155,757.62
  6. Step 6: Final answer
    x = 116,109.80

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1.5x scale

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.