Home / 206,004,136.80-309,006,205.20-90,929,445.60

Finding the Fourth Proportional to 206,004,136.80, 309,006,205.20 and 90,929,445.60

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Solution

The fourth proportional to 206,004,136.80, 309,006,205.20 and 90,929,445.60 is: 136,394,168.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,004,136.80 : 309,006,205.20 = 90,929,445.60 : x
  2. Step 2: Convert to fraction form
    206,004,136.80/309,006,205.20 = 90,929,445.60/x
  3. Step 3: Cross multiply
    206,004,136.80x = 309,006,205.20 × 90,929,445.60
  4. Step 4: Simplify right side
    206,004,136.80x = 28,097,762,925,795,836
  5. Step 5: Solve for x
    x = 28,097,762,925,795,836/206,004,136.80
  6. Step 6: Final answer
    x = 136,394,168.40

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1.5x scale

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.