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Finding the Fourth Proportional to 188,479.78, 260,098.74 and 103,596.82

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Solution

The fourth proportional to 188,479.78, 260,098.74 and 103,596.82 is: 142,961.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,479.78 : 260,098.74 = 103,596.82 : x
  2. Step 2: Convert to fraction form
    188,479.78/260,098.74 = 103,596.82/x
  3. Step 3: Cross multiply
    188,479.78x = 260,098.74 × 103,596.82
  4. Step 4: Simplify right side
    188,479.78x = 26,945,402,350.01
  5. Step 5: Solve for x
    x = 26,945,402,350.01/188,479.78
  6. Step 6: Final answer
    x = 142,961.77

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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.