Home / 138,080,801,418.42-190,523,869,784.94-77,103,786,421.34

Finding the Fourth Proportional to 138,080,801,418.42, 190,523,869,784.94 and 77,103,786,421.34

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Solution

The fourth proportional to 138,080,801,418.42, 190,523,869,784.94 and 77,103,786,421.34 is: 106,387,793,329.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,080,801,418.42 : 190,523,869,784.94 = 77,103,786,421.34 : x
  2. Step 2: Convert to fraction form
    138,080,801,418.42/190,523,869,784.94 = 77,103,786,421.34/x
  3. Step 3: Cross multiply
    138,080,801,418.42x = 190,523,869,784.94 × 77,103,786,421.34
  4. Step 4: Simplify right side
    138,080,801,418.42x = 14,690,111,764,065,207,451,648
  5. Step 5: Solve for x
    x = 14,690,111,764,065,207,451,648/138,080,801,418.42
  6. Step 6: Final answer
    x = 106,387,793,329.43

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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.