Home / 139,538,511-192,563,145.18-77,673,464.19

Finding the Fourth Proportional to 139,538,511, 192,563,145.18 and 77,673,464.19

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Solution

The fourth proportional to 139,538,511, 192,563,145.18 and 77,673,464.19 is: 107,189,380.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,538,511 : 192,563,145.18 = 77,673,464.19 : x
  2. Step 2: Convert to fraction form
    139,538,511/192,563,145.18 = 77,673,464.19/x
  3. Step 3: Cross multiply
    139,538,511x = 192,563,145.18 × 77,673,464.19
  4. Step 4: Simplify right side
    139,538,511x = 14,957,046,561,452,502
  5. Step 5: Solve for x
    x = 14,957,046,561,452,502/139,538,511
  6. Step 6: Final answer
    x = 107,189,380.58

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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.