Home / 209,043.76-313,586.40-66,853.32

Finding the Fourth Proportional to 209,043.76, 313,586.40 and 66,853.32

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Solution

The fourth proportional to 209,043.76, 313,586.40 and 66,853.32 is: 100,286.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,043.76 : 313,586.40 = 66,853.32 : x
  2. Step 2: Convert to fraction form
    209,043.76/313,586.40 = 66,853.32/x
  3. Step 3: Cross multiply
    209,043.76x = 313,586.40 × 66,853.32
  4. Step 4: Simplify right side
    209,043.76x = 20,964,291,946.85
  5. Step 5: Solve for x
    x = 20,964,291,946.85/209,043.76
  6. Step 6: Final answer
    x = 100,286.62

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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.