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Finding the Fourth Proportional to 104,268, 156,008.34 and 64,639.56

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Solution

The fourth proportional to 104,268, 156,008.34 and 64,639.56 is: 96,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,268 : 156,008.34 = 64,639.56 : x
  2. Step 2: Convert to fraction form
    104,268/156,008.34 = 64,639.56/x
  3. Step 3: Cross multiply
    104,268x = 156,008.34 × 64,639.56
  4. Step 4: Simplify right side
    104,268x = 10,084,310,453.93
  5. Step 5: Solve for x
    x = 10,084,310,453.93/104,268
  6. Step 6: Final answer
    x = 96,715.30

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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.