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Finding the Fourth Proportional to 161,491.92, 222,857.16 and 89,870.68

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Solution

The fourth proportional to 161,491.92, 222,857.16 and 89,870.68 is: 124,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,491.92 : 222,857.16 = 89,870.68 : x
  2. Step 2: Convert to fraction form
    161,491.92/222,857.16 = 89,870.68/x
  3. Step 3: Cross multiply
    161,491.92x = 222,857.16 × 89,870.68
  4. Step 4: Simplify right side
    161,491.92x = 20,028,324,512.07
  5. Step 5: Solve for x
    x = 20,028,324,512.07/161,491.92
  6. Step 6: Final answer
    x = 124,020.60

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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.