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Finding the Fourth Proportional to 188,097.28, 259,579.56 and 103,219.90

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Solution

The fourth proportional to 188,097.28, 259,579.56 and 103,219.90 is: 142,446.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,097.28 : 259,579.56 = 103,219.90 : x
  2. Step 2: Convert to fraction form
    188,097.28/259,579.56 = 103,219.90/x
  3. Step 3: Cross multiply
    188,097.28x = 259,579.56 × 103,219.90
  4. Step 4: Simplify right side
    188,097.28x = 26,793,776,225.24
  5. Step 5: Solve for x
    x = 26,793,776,225.24/188,097.28
  6. Step 6: Final answer
    x = 142,446.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.