Home / 127,040,019.20-190,560,028.80-78,667,078.40

Finding the Fourth Proportional to 127,040,019.20, 190,560,028.80 and 78,667,078.40

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Solution

The fourth proportional to 127,040,019.20, 190,560,028.80 and 78,667,078.40 is: 118,000,617.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,040,019.20 : 190,560,028.80 = 78,667,078.40 : x
  2. Step 2: Convert to fraction form
    127,040,019.20/190,560,028.80 = 78,667,078.40/x
  3. Step 3: Cross multiply
    127,040,019.20x = 190,560,028.80 × 78,667,078.40
  4. Step 4: Simplify right side
    127,040,019.20x = 14,990,800,725,515,860
  5. Step 5: Solve for x
    x = 14,990,800,725,515,860/127,040,019.20
  6. Step 6: Final answer
    x = 118,000,617.60

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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.