Home / 139,628,709,950.58-192,688,208,196.93-78,661,808,694.90

Finding the Fourth Proportional to 139,628,709,950.58, 192,688,208,196.93 and 78,661,808,694.90

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Solution

The fourth proportional to 139,628,709,950.58, 192,688,208,196.93 and 78,661,808,694.90 is: 108,553,627,519.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,628,709,950.58 : 192,688,208,196.93 = 78,661,808,694.90 : x
  2. Step 2: Convert to fraction form
    139,628,709,950.58/192,688,208,196.93 = 78,661,808,694.90/x
  3. Step 3: Cross multiply
    139,628,709,950.58x = 192,688,208,196.93 × 78,661,808,694.90
  4. Step 4: Simplify right side
    139,628,709,950.58x = 15,157,202,970,949,967,675,392
  5. Step 5: Solve for x
    x = 15,157,202,970,949,967,675,392/139,628,709,950.58
  6. Step 6: Final answer
    x = 108,553,627,519.12

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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.