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Finding the Fourth Proportional to 186,618.51, 279,942.35 and 68,287.23

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Solution

The fourth proportional to 186,618.51, 279,942.35 and 68,287.23 is: 102,436.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,618.51 : 279,942.35 = 68,287.23 : x
  2. Step 2: Convert to fraction form
    186,618.51/279,942.35 = 68,287.23/x
  3. Step 3: Cross multiply
    186,618.51x = 279,942.35 × 68,287.23
  4. Step 4: Simplify right side
    186,618.51x = 19,116,487,299.75
  5. Step 5: Solve for x
    x = 19,116,487,299.75/186,618.51
  6. Step 6: Final answer
    x = 102,436.18

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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.