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Finding the Fourth Proportional to 186,451.86, 279,718.28 and 68,123

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Solution

The fourth proportional to 186,451.86, 279,718.28 and 68,123 is: 102,199.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,451.86 : 279,718.28 = 68,123 : x
  2. Step 2: Convert to fraction form
    186,451.86/279,718.28 = 68,123/x
  3. Step 3: Cross multiply
    186,451.86x = 279,718.28 × 68,123
  4. Step 4: Simplify right side
    186,451.86x = 19,055,248,388.44
  5. Step 5: Solve for x
    x = 19,055,248,388.44/186,451.86
  6. Step 6: Final answer
    x = 102,199.29

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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.