Home / 208,763,981,324.65-313,017,815,984.89-81,129,644,108.42

Finding the Fourth Proportional to 208,763,981,324.65, 313,017,815,984.89 and 81,129,644,108.42

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Solution

The fourth proportional to 208,763,981,324.65, 313,017,815,984.89 and 81,129,644,108.42 is: 121,644,662,308.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,763,981,324.65 : 313,017,815,984.89 = 81,129,644,108.42 : x
  2. Step 2: Convert to fraction form
    208,763,981,324.65/313,017,815,984.89 = 81,129,644,108.42/x
  3. Step 3: Cross multiply
    208,763,981,324.65x = 313,017,815,984.89 × 81,129,644,108.42
  4. Step 4: Simplify right side
    208,763,981,324.65x = 25,395,024,010,447,461,285,888
  5. Step 5: Solve for x
    x = 25,395,024,010,447,461,285,888/208,763,981,324.65
  6. Step 6: Final answer
    x = 121,644,662,308.66

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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.