Home / 206,308,540.52-309,397,155.62-68,108,415.63

Finding the Fourth Proportional to 206,308,540.52, 309,397,155.62 and 68,108,415.63

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Solution

The fourth proportional to 206,308,540.52, 309,397,155.62 and 68,108,415.63 is: 102,140,948.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,308,540.52 : 309,397,155.62 = 68,108,415.63 : x
  2. Step 2: Convert to fraction form
    206,308,540.52/309,397,155.62 = 68,108,415.63/x
  3. Step 3: Cross multiply
    206,308,540.52x = 309,397,155.62 × 68,108,415.63
  4. Step 4: Simplify right side
    206,308,540.52x = 21,072,550,069,366,208
  5. Step 5: Solve for x
    x = 21,072,550,069,366,208/206,308,540.52
  6. Step 6: Final answer
    x = 102,140,948.78

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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.