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Finding the Fourth Proportional to 68,127, 102,196.26 and 18,879

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Solution

The fourth proportional to 68,127, 102,196.26 and 18,879 is: 28,320.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,127 : 102,196.26 = 18,879 : x
  2. Step 2: Convert to fraction form
    68,127/102,196.26 = 18,879/x
  3. Step 3: Cross multiply
    68,127x = 102,196.26 × 18,879
  4. Step 4: Simplify right side
    68,127x = 1,929,363,192.54
  5. Step 5: Solve for x
    x = 1,929,363,192.54/68,127
  6. Step 6: Final answer
    x = 28,320.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.