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Finding the Fourth Proportional to 104,010, 156,040.92 and 30,138

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Solution

The fourth proportional to 104,010, 156,040.92 and 30,138 is: 45,214.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,010 : 156,040.92 = 30,138 : x
  2. Step 2: Convert to fraction form
    104,010/156,040.92 = 30,138/x
  3. Step 3: Cross multiply
    104,010x = 156,040.92 × 30,138
  4. Step 4: Simplify right side
    104,010x = 4,702,761,246.96
  5. Step 5: Solve for x
    x = 4,702,761,246.96/104,010
  6. Step 6: Final answer
    x = 45,214.51

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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.