Home / 138,080,801,415.42-190,523,869,780.82-77,103,786,418.34

Finding the Fourth Proportional to 138,080,801,415.42, 190,523,869,780.82 and 77,103,786,418.34

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Solution

The fourth proportional to 138,080,801,415.42, 190,523,869,780.82 and 77,103,786,418.34 is: 106,387,793,325.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,080,801,415.42 : 190,523,869,780.82 = 77,103,786,418.34 : x
  2. Step 2: Convert to fraction form
    138,080,801,415.42/190,523,869,780.82 = 77,103,786,418.34/x
  3. Step 3: Cross multiply
    138,080,801,415.42x = 190,523,869,780.82 × 77,103,786,418.34
  4. Step 4: Simplify right side
    138,080,801,415.42x = 14,690,111,763,175,966,769,152
  5. Step 5: Solve for x
    x = 14,690,111,763,175,966,769,152/138,080,801,415.42
  6. Step 6: Final answer
    x = 106,387,793,325.30

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1.5x scale

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.