Home / 113,485,605.20-170,228,407.80-78,848,190.80

Finding the Fourth Proportional to 113,485,605.20, 170,228,407.80 and 78,848,190.80

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Solution

The fourth proportional to 113,485,605.20, 170,228,407.80 and 78,848,190.80 is: 118,272,286.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,485,605.20 : 170,228,407.80 = 78,848,190.80 : x
  2. Step 2: Convert to fraction form
    113,485,605.20/170,228,407.80 = 78,848,190.80/x
  3. Step 3: Cross multiply
    113,485,605.20x = 170,228,407.80 × 78,848,190.80
  4. Step 4: Simplify right side
    113,485,605.20x = 13,422,201,977,794,608
  5. Step 5: Solve for x
    x = 13,422,201,977,794,608/113,485,605.20
  6. Step 6: Final answer
    x = 118,272,286.20

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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.