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Finding the Fourth Proportional to 103,172.60, 154,782.22 and 36,612.80

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Solution

The fourth proportional to 103,172.60, 154,782.22 and 36,612.80 is: 54,927.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,172.60 : 154,782.22 = 36,612.80 : x
  2. Step 2: Convert to fraction form
    103,172.60/154,782.22 = 36,612.80/x
  3. Step 3: Cross multiply
    103,172.60x = 154,782.22 × 36,612.80
  4. Step 4: Simplify right side
    103,172.60x = 5,667,010,464.42
  5. Step 5: Solve for x
    x = 5,667,010,464.42/103,172.60
  6. Step 6: Final answer
    x = 54,927.48

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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.