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Finding the Fourth Proportional to 104,083.63, 155,961.90 and 80,449.03

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Solution

The fourth proportional to 104,083.63, 155,961.90 and 80,449.03 is: 120,547.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,083.63 : 155,961.90 = 80,449.03 : x
  2. Step 2: Convert to fraction form
    104,083.63/155,961.90 = 80,449.03/x
  3. Step 3: Cross multiply
    104,083.63x = 155,961.90 × 80,449.03
  4. Step 4: Simplify right side
    104,083.63x = 12,546,983,571.96
  5. Step 5: Solve for x
    x = 12,546,983,571.96/104,083.63
  6. Step 6: Final answer
    x = 120,547.14

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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.