Home / 81,160,394,720.80-121,740,592,081.20-68,607,970,877.20

Finding the Fourth Proportional to 81,160,394,720.80, 121,740,592,081.20 and 68,607,970,877.20

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Solution

The fourth proportional to 81,160,394,720.80, 121,740,592,081.20 and 68,607,970,877.20 is: 102,911,956,315.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,160,394,720.80 : 121,740,592,081.20 = 68,607,970,877.20 : x
  2. Step 2: Convert to fraction form
    81,160,394,720.80/121,740,592,081.20 = 68,607,970,877.20/x
  3. Step 3: Cross multiply
    81,160,394,720.80x = 121,740,592,081.20 × 68,607,970,877.20
  4. Step 4: Simplify right side
    81,160,394,720.80x = 8,352,374,996,080,053,452,800
  5. Step 5: Solve for x
    x = 8,352,374,996,080,053,452,800/81,160,394,720.80
  6. Step 6: Final answer
    x = 102,911,956,315.80

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1.5x scale

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.