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Finding the Fourth Proportional to 161,362, 222,679.56 and 90,706

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Solution

The fourth proportional to 161,362, 222,679.56 and 90,706 is: 125,174.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,362 : 222,679.56 = 90,706 : x
  2. Step 2: Convert to fraction form
    161,362/222,679.56 = 90,706/x
  3. Step 3: Cross multiply
    161,362x = 222,679.56 × 90,706
  4. Step 4: Simplify right side
    161,362x = 20,198,372,169.36
  5. Step 5: Solve for x
    x = 20,198,372,169.36/161,362
  6. Step 6: Final answer
    x = 125,174.28

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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.