Home / 116,943.63-161,456.01-81,121.11

Finding the Fourth Proportional to 116,943.63, 161,456.01 and 81,121.11

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Solution

The fourth proportional to 116,943.63, 161,456.01 and 81,121.11 is: 111,998.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,943.63 : 161,456.01 = 81,121.11 : x
  2. Step 2: Convert to fraction form
    116,943.63/161,456.01 = 81,121.11/x
  3. Step 3: Cross multiply
    116,943.63x = 161,456.01 × 81,121.11
  4. Step 4: Simplify right side
    116,943.63x = 13,097,490,747.37
  5. Step 5: Solve for x
    x = 13,097,490,747.37/116,943.63
  6. Step 6: Final answer
    x = 111,998.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.