Home / 186,914.57-280,375.80-66,979.34

Finding the Fourth Proportional to 186,914.57, 280,375.80 and 66,979.34

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Solution

The fourth proportional to 186,914.57, 280,375.80 and 66,979.34 is: 100,470.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,914.57 : 280,375.80 = 66,979.34 : x
  2. Step 2: Convert to fraction form
    186,914.57/280,375.80 = 66,979.34/x
  3. Step 3: Cross multiply
    186,914.57x = 280,375.80 × 66,979.34
  4. Step 4: Simplify right side
    186,914.57x = 18,779,386,035.97
  5. Step 5: Solve for x
    x = 18,779,386,035.97/186,914.57
  6. Step 6: Final answer
    x = 100,470.42

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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.