Home / 107,721.73-161,440.03-82,666.03

Finding the Fourth Proportional to 107,721.73, 161,440.03 and 82,666.03

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Solution

The fourth proportional to 107,721.73, 161,440.03 and 82,666.03 is: 123,889.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,721.73 : 161,440.03 = 82,666.03 : x
  2. Step 2: Convert to fraction form
    107,721.73/161,440.03 = 82,666.03/x
  3. Step 3: Cross multiply
    107,721.73x = 161,440.03 × 82,666.03
  4. Step 4: Simplify right side
    107,721.73x = 13,345,606,363.18
  5. Step 5: Solve for x
    x = 13,345,606,363.18/107,721.73
  6. Step 6: Final answer
    x = 123,889.64

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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.