Home / 206,528,749.50-309,815,819.84-68,304,007.20

Finding the Fourth Proportional to 206,528,749.50, 309,815,819.84 and 68,304,007.20

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Solution

The fourth proportional to 206,528,749.50, 309,815,819.84 and 68,304,007.20 is: 102,463,516.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,528,749.50 : 309,815,819.84 = 68,304,007.20 : x
  2. Step 2: Convert to fraction form
    206,528,749.50/309,815,819.84 = 68,304,007.20/x
  3. Step 3: Cross multiply
    206,528,749.50x = 309,815,819.84 × 68,304,007.20
  4. Step 4: Simplify right side
    206,528,749.50x = 21,161,661,989,025,260
  5. Step 5: Solve for x
    x = 21,161,661,989,025,260/206,528,749.50
  6. Step 6: Final answer
    x = 102,463,516.78

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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.