Home / 139,142,074.12-192,033,776.94-84,138,324.28

Finding the Fourth Proportional to 139,142,074.12, 192,033,776.94 and 84,138,324.28

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Solution

The fourth proportional to 139,142,074.12, 192,033,776.94 and 84,138,324.28 is: 116,121,599.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,142,074.12 : 192,033,776.94 = 84,138,324.28 : x
  2. Step 2: Convert to fraction form
    139,142,074.12/192,033,776.94 = 84,138,324.28/x
  3. Step 3: Cross multiply
    139,142,074.12x = 192,033,776.94 × 84,138,324.28
  4. Step 4: Simplify right side
    139,142,074.12x = 16,157,400,196,890,906
  5. Step 5: Solve for x
    x = 16,157,400,196,890,906/139,142,074.12
  6. Step 6: Final answer
    x = 116,121,599.44

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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.