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Finding the Fourth Proportional to 209,074.37, 312,836.51 and 124,880.33

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Solution

The fourth proportional to 209,074.37, 312,836.51 and 124,880.33 is: 186,857.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,074.37 : 312,836.51 = 124,880.33 : x
  2. Step 2: Convert to fraction form
    209,074.37/312,836.51 = 124,880.33/x
  3. Step 3: Cross multiply
    209,074.37x = 312,836.51 × 124,880.33
  4. Step 4: Simplify right side
    209,074.37x = 39,067,124,416.26
  5. Step 5: Solve for x
    x = 39,067,124,416.26/209,074.37
  6. Step 6: Final answer
    x = 186,857.55

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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.