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Finding the Fourth Proportional to 186,722.74, 279,901.86 and 74,369.26

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Solution

The fourth proportional to 186,722.74, 279,901.86 and 74,369.26 is: 111,481.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,722.74 : 279,901.86 = 74,369.26 : x
  2. Step 2: Convert to fraction form
    186,722.74/279,901.86 = 74,369.26/x
  3. Step 3: Cross multiply
    186,722.74x = 279,901.86 × 74,369.26
  4. Step 4: Simplify right side
    186,722.74x = 20,816,094,200.82
  5. Step 5: Solve for x
    x = 20,816,094,200.82/186,722.74
  6. Step 6: Final answer
    x = 111,481.30

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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.