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Finding the Fourth Proportional to 108,015.60, 161,731.80 and 108,015.60

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Solution

The fourth proportional to 108,015.60, 161,731.80 and 108,015.60 is: 161,731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,015.60 : 161,731.80 = 108,015.60 : x
  2. Step 2: Convert to fraction form
    108,015.60/161,731.80 = 108,015.60/x
  3. Step 3: Cross multiply
    108,015.60x = 161,731.80 × 108,015.60
  4. Step 4: Simplify right side
    108,015.60x = 17,469,557,416.08
  5. Step 5: Solve for x
    x = 17,469,557,416.08/108,015.60
  6. Step 6: Final answer
    x = 161,731.80

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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.