Home / 139,538,625.60-192,563,305.90-77,673,578.78

Finding the Fourth Proportional to 139,538,625.60, 192,563,305.90 and 77,673,578.78

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Solution

The fourth proportional to 139,538,625.60, 192,563,305.90 and 77,673,578.78 is: 107,189,540.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,538,625.60 : 192,563,305.90 = 77,673,578.78 : x
  2. Step 2: Convert to fraction form
    139,538,625.60/192,563,305.90 = 77,673,578.78/x
  3. Step 3: Cross multiply
    139,538,625.60x = 192,563,305.90 × 77,673,578.78
  4. Step 4: Simplify right side
    139,538,625.60x = 14,957,081,110,960,890
  5. Step 5: Solve for x
    x = 14,957,081,110,960,890/139,538,625.60
  6. Step 6: Final answer
    x = 107,189,540.15

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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.