Home / 139,538,736.09-192,563,458.38-77,673,689.28

Finding the Fourth Proportional to 139,538,736.09, 192,563,458.38 and 77,673,689.28

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Solution

The fourth proportional to 139,538,736.09, 192,563,458.38 and 77,673,689.28 is: 107,189,692.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,538,736.09 : 192,563,458.38 = 77,673,689.28 : x
  2. Step 2: Convert to fraction form
    139,538,736.09/192,563,458.38 = 77,673,689.28/x
  3. Step 3: Cross multiply
    139,538,736.09x = 192,563,458.38 × 77,673,689.28
  4. Step 4: Simplify right side
    139,538,736.09x = 14,957,114,232,890,332
  5. Step 5: Solve for x
    x = 14,957,114,232,890,332/139,538,736.09
  6. Step 6: Final answer
    x = 107,189,692.64

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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.