Home / 107,828.80-161,743.20-61,172.80

Finding the Fourth Proportional to 107,828.80, 161,743.20 and 61,172.80

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Solution

The fourth proportional to 107,828.80, 161,743.20 and 61,172.80 is: 91,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,828.80 : 161,743.20 = 61,172.80 : x
  2. Step 2: Convert to fraction form
    107,828.80/161,743.20 = 61,172.80/x
  3. Step 3: Cross multiply
    107,828.80x = 161,743.20 × 61,172.80
  4. Step 4: Simplify right side
    107,828.80x = 9,894,284,424.96
  5. Step 5: Solve for x
    x = 9,894,284,424.96/107,828.80
  6. Step 6: Final answer
    x = 91,759.20

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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.