Home / 113,485,412.20-170,228,118.30-78,847,997.80

Finding the Fourth Proportional to 113,485,412.20, 170,228,118.30 and 78,847,997.80

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Solution

The fourth proportional to 113,485,412.20, 170,228,118.30 and 78,847,997.80 is: 118,271,996.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,485,412.20 : 170,228,118.30 = 78,847,997.80 : x
  2. Step 2: Convert to fraction form
    113,485,412.20/170,228,118.30 = 78,847,997.80/x
  3. Step 3: Cross multiply
    113,485,412.20x = 170,228,118.30 × 78,847,997.80
  4. Step 4: Simplify right side
    113,485,412.20x = 13,422,146,297,216,540
  5. Step 5: Solve for x
    x = 13,422,146,297,216,540/113,485,412.20
  6. Step 6: Final answer
    x = 118,271,996.70

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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.