Home / 138,080,801,405.62-190,523,869,767.27-77,103,786,408.55

Finding the Fourth Proportional to 138,080,801,405.62, 190,523,869,767.27 and 77,103,786,408.55

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Solution

The fourth proportional to 138,080,801,405.62, 190,523,869,767.27 and 77,103,786,408.55 is: 106,387,793,311.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,080,801,405.62 : 190,523,869,767.27 = 77,103,786,408.55 : x
  2. Step 2: Convert to fraction form
    138,080,801,405.62/190,523,869,767.27 = 77,103,786,408.55/x
  3. Step 3: Cross multiply
    138,080,801,405.62x = 190,523,869,767.27 × 77,103,786,408.55
  4. Step 4: Simplify right side
    138,080,801,405.62x = 14,690,111,760,265,981,722,624
  5. Step 5: Solve for x
    x = 14,690,111,760,265,981,722,624/138,080,801,405.62
  6. Step 6: Final answer
    x = 106,387,793,311.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.