Home / 139,751,971.38-192,872,071.62-84,015,435.87

Finding the Fourth Proportional to 139,751,971.38, 192,872,071.62 and 84,015,435.87

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Solution

The fourth proportional to 139,751,971.38, 192,872,071.62 and 84,015,435.87 is: 115,949,929.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,751,971.38 : 192,872,071.62 = 84,015,435.87 : x
  2. Step 2: Convert to fraction form
    139,751,971.38/192,872,071.62 = 84,015,435.87/x
  3. Step 3: Cross multiply
    139,751,971.38x = 192,872,071.62 × 84,015,435.87
  4. Step 4: Simplify right side
    139,751,971.38x = 16,204,231,164,304,158
  5. Step 5: Solve for x
    x = 16,204,231,164,304,158/139,751,971.38
  6. Step 6: Final answer
    x = 115,949,929.04

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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.