Home / 154,440,324.54-213,131,809.89-90,865,101.51

Finding the Fourth Proportional to 154,440,324.54, 213,131,809.89 and 90,865,101.51

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Solution

The fourth proportional to 154,440,324.54, 213,131,809.89 and 90,865,101.51 is: 125,396,288.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,440,324.54 : 213,131,809.89 = 90,865,101.51 : x
  2. Step 2: Convert to fraction form
    154,440,324.54/213,131,809.89 = 90,865,101.51/x
  3. Step 3: Cross multiply
    154,440,324.54x = 213,131,809.89 × 90,865,101.51
  4. Step 4: Simplify right side
    154,440,324.54x = 19,366,243,540,664,872
  5. Step 5: Solve for x
    x = 19,366,243,540,664,872/154,440,324.54
  6. Step 6: Final answer
    x = 125,396,288.81

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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.