Home / 205,780.89-283,961.44-115,129.74

Finding the Fourth Proportional to 205,780.89, 283,961.44 and 115,129.74

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Solution

The fourth proportional to 205,780.89, 283,961.44 and 115,129.74 is: 158,869.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,780.89 : 283,961.44 = 115,129.74 : x
  2. Step 2: Convert to fraction form
    205,780.89/283,961.44 = 115,129.74/x
  3. Step 3: Cross multiply
    205,780.89x = 283,961.44 × 115,129.74
  4. Step 4: Simplify right side
    205,780.89x = 32,692,405,049.59
  5. Step 5: Solve for x
    x = 32,692,405,049.59/205,780.89
  6. Step 6: Final answer
    x = 158,869.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.