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Finding the Fourth Proportional to 188,647.92, 260,328.65 and 103,764.96

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Solution

The fourth proportional to 188,647.92, 260,328.65 and 103,764.96 is: 143,192.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,647.92 : 260,328.65 = 103,764.96 : x
  2. Step 2: Convert to fraction form
    188,647.92/260,328.65 = 103,764.96/x
  3. Step 3: Cross multiply
    188,647.92x = 260,328.65 × 103,764.96
  4. Step 4: Simplify right side
    188,647.92x = 27,012,991,435.28
  5. Step 5: Solve for x
    x = 27,012,991,435.28/188,647.92
  6. Step 6: Final answer
    x = 143,192.63

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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.