Home / 205,745.14-308,631.38-79,386.96

Finding the Fourth Proportional to 205,745.14, 308,631.38 and 79,386.96

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Solution

The fourth proportional to 205,745.14, 308,631.38 and 79,386.96 is: 119,085.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,745.14 : 308,631.38 = 79,386.96 : x
  2. Step 2: Convert to fraction form
    205,745.14/308,631.38 = 79,386.96/x
  3. Step 3: Cross multiply
    205,745.14x = 308,631.38 × 79,386.96
  4. Step 4: Simplify right side
    205,745.14x = 24,501,307,018.80
  5. Step 5: Solve for x
    x = 24,501,307,018.80/205,745.14
  6. Step 6: Final answer
    x = 119,085.71

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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.