Home / 129,828.82-194,743.23-103,699.65

Finding the Fourth Proportional to 129,828.82, 194,743.23 and 103,699.65

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Solution

The fourth proportional to 129,828.82, 194,743.23 and 103,699.65 is: 155,549.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,828.82 : 194,743.23 = 103,699.65 : x
  2. Step 2: Convert to fraction form
    129,828.82/194,743.23 = 103,699.65/x
  3. Step 3: Cross multiply
    129,828.82x = 194,743.23 × 103,699.65
  4. Step 4: Simplify right side
    129,828.82x = 20,194,804,790.87
  5. Step 5: Solve for x
    x = 20,194,804,790.87/129,828.82
  6. Step 6: Final answer
    x = 155,549.48

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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.