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Finding the Fourth Proportional to 103,843.89, 155,776.77 and 51,202.80

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Solution

The fourth proportional to 103,843.89, 155,776.77 and 51,202.80 is: 76,809.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,843.89 : 155,776.77 = 51,202.80 : x
  2. Step 2: Convert to fraction form
    103,843.89/155,776.77 = 51,202.80/x
  3. Step 3: Cross multiply
    103,843.89x = 155,776.77 × 51,202.80
  4. Step 4: Simplify right side
    103,843.89x = 7,976,206,798.96
  5. Step 5: Solve for x
    x = 7,976,206,798.96/103,843.89
  6. Step 6: Final answer
    x = 76,809.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.