Home / 113,485,612.70-170,228,419.05-78,848,198.30

Finding the Fourth Proportional to 113,485,612.70, 170,228,419.05 and 78,848,198.30

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Solution

The fourth proportional to 113,485,612.70, 170,228,419.05 and 78,848,198.30 is: 118,272,297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,485,612.70 : 170,228,419.05 = 78,848,198.30 : x
  2. Step 2: Convert to fraction form
    113,485,612.70/170,228,419.05 = 78,848,198.30/x
  3. Step 3: Cross multiply
    113,485,612.70x = 170,228,419.05 × 78,848,198.30
  4. Step 4: Simplify right side
    113,485,612.70x = 13,422,204,141,549,898
  5. Step 5: Solve for x
    x = 13,422,204,141,549,898/113,485,612.70
  6. Step 6: Final answer
    x = 118,272,297.45

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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.