Home / 205,039.07-307,662.33-138,339.02

Finding the Fourth Proportional to 205,039.07, 307,662.33 and 138,339.02

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Solution

The fourth proportional to 205,039.07, 307,662.33 and 138,339.02 is: 207,578.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,039.07 : 307,662.33 = 138,339.02 : x
  2. Step 2: Convert to fraction form
    205,039.07/307,662.33 = 138,339.02/x
  3. Step 3: Cross multiply
    205,039.07x = 307,662.33 × 138,339.02
  4. Step 4: Simplify right side
    205,039.07x = 42,561,703,684.81
  5. Step 5: Solve for x
    x = 42,561,703,684.81/205,039.07
  6. Step 6: Final answer
    x = 207,578.51

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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.