Home / 205,900.89-308,904.57-120,583.86

Finding the Fourth Proportional to 205,900.89, 308,904.57 and 120,583.86

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Solution

The fourth proportional to 205,900.89, 308,904.57 and 120,583.86 is: 180,906.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,900.89 : 308,904.57 = 120,583.86 : x
  2. Step 2: Convert to fraction form
    205,900.89/308,904.57 = 120,583.86/x
  3. Step 3: Cross multiply
    205,900.89x = 308,904.57 × 120,583.86
  4. Step 4: Simplify right side
    205,900.89x = 37,248,905,422.24
  5. Step 5: Solve for x
    x = 37,248,905,422.24/205,900.89
  6. Step 6: Final answer
    x = 180,906.97

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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.