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Finding the Fourth Proportional to 102,797.20, 154,080.60 and 43,622.80

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Solution

The fourth proportional to 102,797.20, 154,080.60 and 43,622.80 is: 65,385.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,797.20 : 154,080.60 = 43,622.80 : x
  2. Step 2: Convert to fraction form
    102,797.20/154,080.60 = 43,622.80/x
  3. Step 3: Cross multiply
    102,797.20x = 154,080.60 × 43,622.80
  4. Step 4: Simplify right side
    102,797.20x = 6,721,427,197.68
  5. Step 5: Solve for x
    x = 6,721,427,197.68/102,797.20
  6. Step 6: Final answer
    x = 65,385.31

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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.