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Finding the Fourth Proportional to 104,636.40, 156,858.84 and 45,450.78

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Solution

The fourth proportional to 104,636.40, 156,858.84 and 45,450.78 is: 68,134.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,636.40 : 156,858.84 = 45,450.78 : x
  2. Step 2: Convert to fraction form
    104,636.40/156,858.84 = 45,450.78/x
  3. Step 3: Cross multiply
    104,636.40x = 156,858.84 × 45,450.78
  4. Step 4: Simplify right side
    104,636.40x = 7,129,356,627.90
  5. Step 5: Solve for x
    x = 7,129,356,627.90/104,636.40
  6. Step 6: Final answer
    x = 68,134.57

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1.5x scale

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.