Home / 139,415,958.72-192,399,331.44-77,540,771.52

Finding the Fourth Proportional to 139,415,958.72, 192,399,331.44 and 77,540,771.52

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Solution

The fourth proportional to 139,415,958.72, 192,399,331.44 and 77,540,771.52 is: 107,009,217.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,415,958.72 : 192,399,331.44 = 77,540,771.52 : x
  2. Step 2: Convert to fraction form
    139,415,958.72/192,399,331.44 = 77,540,771.52/x
  3. Step 3: Cross multiply
    139,415,958.72x = 192,399,331.44 × 77,540,771.52
  4. Step 4: Simplify right side
    139,415,958.72x = 14,918,792,599,789,792
  5. Step 5: Solve for x
    x = 14,918,792,599,789,792/139,415,958.72
  6. Step 6: Final answer
    x = 107,009,217.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.