Home / 205,538.70-308,121.19-79,098.31

Finding the Fourth Proportional to 205,538.70, 308,121.19 and 79,098.31

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Solution

The fourth proportional to 205,538.70, 308,121.19 and 79,098.31 is: 118,575.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,538.70 : 308,121.19 = 79,098.31 : x
  2. Step 2: Convert to fraction form
    205,538.70/308,121.19 = 79,098.31/x
  3. Step 3: Cross multiply
    205,538.70x = 308,121.19 × 79,098.31
  4. Step 4: Simplify right side
    205,538.70x = 24,371,865,404.19
  5. Step 5: Solve for x
    x = 24,371,865,404.19/205,538.70
  6. Step 6: Final answer
    x = 118,575.55

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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.