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Finding the Fourth Proportional to 188,930, 260,723.40 and 104,046.88

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Solution

The fourth proportional to 188,930, 260,723.40 and 104,046.88 is: 143,584.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,930 : 260,723.40 = 104,046.88 : x
  2. Step 2: Convert to fraction form
    188,930/260,723.40 = 104,046.88/x
  3. Step 3: Cross multiply
    188,930x = 260,723.40 × 104,046.88
  4. Step 4: Simplify right side
    188,930x = 27,127,456,312.99
  5. Step 5: Solve for x
    x = 27,127,456,312.99/188,930
  6. Step 6: Final answer
    x = 143,584.69

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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.