Home / 139,163,216.39-192,039,977.01-77,287,540.76

Finding the Fourth Proportional to 139,163,216.39, 192,039,977.01 and 77,287,540.76

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Solution

The fourth proportional to 139,163,216.39, 192,039,977.01 and 77,287,540.76 is: 106,653,884.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,163,216.39 : 192,039,977.01 = 77,287,540.76 : x
  2. Step 2: Convert to fraction form
    139,163,216.39/192,039,977.01 = 77,287,540.76/x
  3. Step 3: Cross multiply
    139,163,216.39x = 192,039,977.01 × 77,287,540.76
  4. Step 4: Simplify right side
    139,163,216.39x = 14,842,297,549,749,636
  5. Step 5: Solve for x
    x = 14,842,297,549,749,636/139,163,216.39
  6. Step 6: Final answer
    x = 106,653,884.09

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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.