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Finding the Fourth Proportional to 104,440.80, 156,661.20 and 64,977.60

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Solution

The fourth proportional to 104,440.80, 156,661.20 and 64,977.60 is: 97,466.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,440.80 : 156,661.20 = 64,977.60 : x
  2. Step 2: Convert to fraction form
    104,440.80/156,661.20 = 64,977.60/x
  3. Step 3: Cross multiply
    104,440.80x = 156,661.20 × 64,977.60
  4. Step 4: Simplify right side
    104,440.80x = 10,179,468,789.12
  5. Step 5: Solve for x
    x = 10,179,468,789.12/104,440.80
  6. Step 6: Final answer
    x = 97,466.40

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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.