Home / 81,160,394,716.30-121,740,592,074.45-68,607,970,872.70

Finding the Fourth Proportional to 81,160,394,716.30, 121,740,592,074.45 and 68,607,970,872.70

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Solution

The fourth proportional to 81,160,394,716.30, 121,740,592,074.45 and 68,607,970,872.70 is: 102,911,956,309.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,160,394,716.30 : 121,740,592,074.45 = 68,607,970,872.70 : x
  2. Step 2: Convert to fraction form
    81,160,394,716.30/121,740,592,074.45 = 68,607,970,872.70/x
  3. Step 3: Cross multiply
    81,160,394,716.30x = 121,740,592,074.45 × 68,607,970,872.70
  4. Step 4: Simplify right side
    81,160,394,716.30x = 8,352,374,995,069,117,136,896
  5. Step 5: Solve for x
    x = 8,352,374,995,069,117,136,896/81,160,394,716.30
  6. Step 6: Final answer
    x = 102,911,956,309.05

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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.