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Finding the Fourth Proportional to 104,720.64, 155,896.46 and 104,097.84

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Solution

The fourth proportional to 104,720.64, 155,896.46 and 104,097.84 is: 154,969.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,720.64 : 155,896.46 = 104,097.84 : x
  2. Step 2: Convert to fraction form
    104,720.64/155,896.46 = 104,097.84/x
  3. Step 3: Cross multiply
    104,720.64x = 155,896.46 × 104,097.84
  4. Step 4: Simplify right side
    104,720.64x = 16,228,484,229.16
  5. Step 5: Solve for x
    x = 16,228,484,229.16/104,720.64
  6. Step 6: Final answer
    x = 154,969.30

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.