Home / 209,154.51-313,512.46-102,391.25

Finding the Fourth Proportional to 209,154.51, 313,512.46 and 102,391.25

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Solution

The fourth proportional to 209,154.51, 313,512.46 and 102,391.25 is: 153,479.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,154.51 : 313,512.46 = 102,391.25 : x
  2. Step 2: Convert to fraction form
    209,154.51/313,512.46 = 102,391.25/x
  3. Step 3: Cross multiply
    209,154.51x = 313,512.46 × 102,391.25
  4. Step 4: Simplify right side
    209,154.51x = 32,100,932,669.98
  5. Step 5: Solve for x
    x = 32,100,932,669.98/209,154.51
  6. Step 6: Final answer
    x = 153,479.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.