Home / 206,308,537.51-309,397,151.12-68,108,412.63

Finding the Fourth Proportional to 206,308,537.51, 309,397,151.12 and 68,108,412.63

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Solution

The fourth proportional to 206,308,537.51, 309,397,151.12 and 68,108,412.63 is: 102,140,944.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,308,537.51 : 309,397,151.12 = 68,108,412.63 : x
  2. Step 2: Convert to fraction form
    206,308,537.51/309,397,151.12 = 68,108,412.63/x
  3. Step 3: Cross multiply
    206,308,537.51x = 309,397,151.12 × 68,108,412.63
  4. Step 4: Simplify right side
    206,308,537.51x = 21,072,548,833,235,812
  5. Step 5: Solve for x
    x = 21,072,548,833,235,812/206,308,537.51
  6. Step 6: Final answer
    x = 102,140,944.28

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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.