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Finding the Fourth Proportional to 186,674.30, 279,898.86 and 74,371.86

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Solution

The fourth proportional to 186,674.30, 279,898.86 and 74,371.86 is: 111,512.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,674.30 : 279,898.86 = 74,371.86 : x
  2. Step 2: Convert to fraction form
    186,674.30/279,898.86 = 74,371.86/x
  3. Step 3: Cross multiply
    186,674.30x = 279,898.86 × 74,371.86
  4. Step 4: Simplify right side
    186,674.30x = 20,816,598,830.08
  5. Step 5: Solve for x
    x = 20,816,598,830.08/186,674.30
  6. Step 6: Final answer
    x = 111,512.93

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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.