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Finding the Fourth Proportional to 188,701.22, 260,403.99 and 103,819.70

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Solution

The fourth proportional to 188,701.22, 260,403.99 and 103,819.70 is: 143,269.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,701.22 : 260,403.99 = 103,819.70 : x
  2. Step 2: Convert to fraction form
    188,701.22/260,403.99 = 103,819.70/x
  3. Step 3: Cross multiply
    188,701.22x = 260,403.99 × 103,819.70
  4. Step 4: Simplify right side
    188,701.22x = 27,035,064,120.60
  5. Step 5: Solve for x
    x = 27,035,064,120.60/188,701.22
  6. Step 6: Final answer
    x = 143,269.15

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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.