Home / 208,763,981,319.39-313,017,815,977.02-81,129,644,103.17

Finding the Fourth Proportional to 208,763,981,319.39, 313,017,815,977.02 and 81,129,644,103.17

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Solution

The fourth proportional to 208,763,981,319.39, 313,017,815,977.02 and 81,129,644,103.17 is: 121,644,662,300.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,763,981,319.39 : 313,017,815,977.02 = 81,129,644,103.17 : x
  2. Step 2: Convert to fraction form
    208,763,981,319.39/313,017,815,977.02 = 81,129,644,103.17/x
  3. Step 3: Cross multiply
    208,763,981,319.39x = 313,017,815,977.02 × 81,129,644,103.17
  4. Step 4: Simplify right side
    208,763,981,319.39x = 25,395,024,008,165,625,692,160
  5. Step 5: Solve for x
    x = 25,395,024,008,165,625,692,160/208,763,981,319.39
  6. Step 6: Final answer
    x = 121,644,662,300.79

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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.