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Finding the Fourth Proportional to 188,675.90, 260,379.50 and 108,118.98

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Solution

The fourth proportional to 188,675.90, 260,379.50 and 108,118.98 is: 149,208.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,675.90 : 260,379.50 = 108,118.98 : x
  2. Step 2: Convert to fraction form
    188,675.90/260,379.50 = 108,118.98/x
  3. Step 3: Cross multiply
    188,675.90x = 260,379.50 × 108,118.98
  4. Step 4: Simplify right side
    188,675.90x = 28,151,965,952.91
  5. Step 5: Solve for x
    x = 28,151,965,952.91/188,675.90
  6. Step 6: Final answer
    x = 149,208.07

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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.