Home / 81,160,394,715.80-121,740,592,073.70-68,607,970,872.20

Finding the Fourth Proportional to 81,160,394,715.80, 121,740,592,073.70 and 68,607,970,872.20

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Solution

The fourth proportional to 81,160,394,715.80, 121,740,592,073.70 and 68,607,970,872.20 is: 102,911,956,308.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,160,394,715.80 : 121,740,592,073.70 = 68,607,970,872.20 : x
  2. Step 2: Convert to fraction form
    81,160,394,715.80/121,740,592,073.70 = 68,607,970,872.20/x
  3. Step 3: Cross multiply
    81,160,394,715.80x = 121,740,592,073.70 × 68,607,970,872.20
  4. Step 4: Simplify right side
    81,160,394,715.80x = 8,352,374,994,956,791,578,624
  5. Step 5: Solve for x
    x = 8,352,374,994,956,791,578,624/81,160,394,715.80
  6. Step 6: Final answer
    x = 102,911,956,308.30

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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.