Home / 206,308,539.45-309,397,154.02-68,108,414.56

Finding the Fourth Proportional to 206,308,539.45, 309,397,154.02 and 68,108,414.56

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Solution

The fourth proportional to 206,308,539.45, 309,397,154.02 and 68,108,414.56 is: 102,140,947.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,308,539.45 : 309,397,154.02 = 68,108,414.56 : x
  2. Step 2: Convert to fraction form
    206,308,539.45/309,397,154.02 = 68,108,414.56/x
  3. Step 3: Cross multiply
    206,308,539.45x = 309,397,154.02 × 68,108,414.56
  4. Step 4: Simplify right side
    206,308,539.45x = 21,072,549,629,763,468
  5. Step 5: Solve for x
    x = 21,072,549,629,763,468/206,308,539.45
  6. Step 6: Final answer
    x = 102,140,947.18

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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.