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Finding the Fourth Proportional to 103,991.12, 156,003 and 44,843.60

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Solution

The fourth proportional to 103,991.12, 156,003 and 44,843.60 is: 67,272.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,991.12 : 156,003 = 44,843.60 : x
  2. Step 2: Convert to fraction form
    103,991.12/156,003 = 44,843.60/x
  3. Step 3: Cross multiply
    103,991.12x = 156,003 × 44,843.60
  4. Step 4: Simplify right side
    103,991.12x = 6,995,736,130.80
  5. Step 5: Solve for x
    x = 6,995,736,130.80/103,991.12
  6. Step 6: Final answer
    x = 67,272.44

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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.