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Finding the Fourth Proportional to 104,518.80, 156,778.20 and 34,381.20

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Solution

The fourth proportional to 104,518.80, 156,778.20 and 34,381.20 is: 51,571.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,518.80 : 156,778.20 = 34,381.20 : x
  2. Step 2: Convert to fraction form
    104,518.80/156,778.20 = 34,381.20/x
  3. Step 3: Cross multiply
    104,518.80x = 156,778.20 × 34,381.20
  4. Step 4: Simplify right side
    104,518.80x = 5,390,222,649.84
  5. Step 5: Solve for x
    x = 5,390,222,649.84/104,518.80
  6. Step 6: Final answer
    x = 51,571.80

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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.