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Finding the Fourth Proportional to 188,930.83, 260,721.40 and 104,055.79

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Solution

The fourth proportional to 188,930.83, 260,721.40 and 104,055.79 is: 143,595.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,930.83 : 260,721.40 = 104,055.79 : x
  2. Step 2: Convert to fraction form
    188,930.83/260,721.40 = 104,055.79/x
  3. Step 3: Cross multiply
    188,930.83x = 260,721.40 × 104,055.79
  4. Step 4: Simplify right side
    188,930.83x = 27,129,570,726.63
  5. Step 5: Solve for x
    x = 27,129,570,726.63/188,930.83
  6. Step 6: Final answer
    x = 143,595.26

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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.