Home / 208,763,981,320.40-313,017,815,978.52-81,129,644,104.16

Finding the Fourth Proportional to 208,763,981,320.40, 313,017,815,978.52 and 81,129,644,104.16

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Solution

The fourth proportional to 208,763,981,320.40, 313,017,815,978.52 and 81,129,644,104.16 is: 121,644,662,302.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,763,981,320.40 : 313,017,815,978.52 = 81,129,644,104.16 : x
  2. Step 2: Convert to fraction form
    208,763,981,320.40/313,017,815,978.52 = 81,129,644,104.16/x
  3. Step 3: Cross multiply
    208,763,981,320.40x = 313,017,815,978.52 × 81,129,644,104.16
  4. Step 4: Simplify right side
    208,763,981,320.40x = 25,395,024,008,598,775,660,544
  5. Step 5: Solve for x
    x = 25,395,024,008,598,775,660,544/208,763,981,320.40
  6. Step 6: Final answer
    x = 121,644,662,302.28

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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.