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Finding the Fourth Proportional to 104,119.54, 156,243.57 and 40,928.61

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Solution

The fourth proportional to 104,119.54, 156,243.57 and 40,928.61 is: 61,418.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,119.54 : 156,243.57 = 40,928.61 : x
  2. Step 2: Convert to fraction form
    104,119.54/156,243.57 = 40,928.61/x
  3. Step 3: Cross multiply
    104,119.54x = 156,243.57 × 40,928.61
  4. Step 4: Simplify right side
    104,119.54x = 6,394,831,360.32
  5. Step 5: Solve for x
    x = 6,394,831,360.32/104,119.54
  6. Step 6: Final answer
    x = 61,418.17

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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.