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Finding the Fourth Proportional to 188,462.08, 260,067.84 and 103,590.40

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Solution

The fourth proportional to 188,462.08, 260,067.84 and 103,590.40 is: 142,949.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,462.08 : 260,067.84 = 103,590.40 : x
  2. Step 2: Convert to fraction form
    188,462.08/260,067.84 = 103,590.40/x
  3. Step 3: Cross multiply
    188,462.08x = 260,067.84 × 103,590.40
  4. Step 4: Simplify right side
    188,462.08x = 26,940,531,572.74
  5. Step 5: Solve for x
    x = 26,940,531,572.74/188,462.08
  6. Step 6: Final answer
    x = 142,949.35

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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.