Home / 206,616.35-309,902.64-66,364.04

Finding the Fourth Proportional to 206,616.35, 309,902.64 and 66,364.04

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Solution

The fourth proportional to 206,616.35, 309,902.64 and 66,364.04 is: 99,539.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,616.35 : 309,902.64 = 66,364.04 : x
  2. Step 2: Convert to fraction form
    206,616.35/309,902.64 = 66,364.04/x
  3. Step 3: Cross multiply
    206,616.35x = 309,902.64 × 66,364.04
  4. Step 4: Simplify right side
    206,616.35x = 20,566,389,647.55
  5. Step 5: Solve for x
    x = 20,566,389,647.55/206,616.35
  6. Step 6: Final answer
    x = 99,539.03

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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.