Home / 205,519.86-307,504.62-121,325.83

Finding the Fourth Proportional to 205,519.86, 307,504.62 and 121,325.83

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Solution

The fourth proportional to 205,519.86, 307,504.62 and 121,325.83 is: 181,531.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,519.86 : 307,504.62 = 121,325.83 : x
  2. Step 2: Convert to fraction form
    205,519.86/307,504.62 = 121,325.83/x
  3. Step 3: Cross multiply
    205,519.86x = 307,504.62 × 121,325.83
  4. Step 4: Simplify right side
    205,519.86x = 37,308,251,106.18
  5. Step 5: Solve for x
    x = 37,308,251,106.18/205,519.86
  6. Step 6: Final answer
    x = 181,531.12

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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.