Home / 209,540.80-314,311.20-83,211.18

Finding the Fourth Proportional to 209,540.80, 314,311.20 and 83,211.18

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Solution

The fourth proportional to 209,540.80, 314,311.20 and 83,211.18 is: 124,816.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,540.80 : 314,311.20 = 83,211.18 : x
  2. Step 2: Convert to fraction form
    209,540.80/314,311.20 = 83,211.18/x
  3. Step 3: Cross multiply
    209,540.80x = 314,311.20 × 83,211.18
  4. Step 4: Simplify right side
    209,540.80x = 26,154,204,267.66
  5. Step 5: Solve for x
    x = 26,154,204,267.66/209,540.80
  6. Step 6: Final answer
    x = 124,816.76

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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.