Home / 161,021.26-222,216.28-89,401.28

Finding the Fourth Proportional to 161,021.26, 222,216.28 and 89,401.28

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Solution

The fourth proportional to 161,021.26, 222,216.28 and 89,401.28 is: 123,377.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,021.26 : 222,216.28 = 89,401.28 : x
  2. Step 2: Convert to fraction form
    161,021.26/222,216.28 = 89,401.28/x
  3. Step 3: Cross multiply
    161,021.26x = 222,216.28 × 89,401.28
  4. Step 4: Simplify right side
    161,021.26x = 19,866,419,868.84
  5. Step 5: Solve for x
    x = 19,866,419,868.84/161,021.26
  6. Step 6: Final answer
    x = 123,377.62

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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.