Home / 161,315.68-222,546-100,780.96

Finding the Fourth Proportional to 161,315.68, 222,546 and 100,780.96

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Solution

The fourth proportional to 161,315.68, 222,546 and 100,780.96 is: 139,034.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,315.68 : 222,546 = 100,780.96 : x
  2. Step 2: Convert to fraction form
    161,315.68/222,546 = 100,780.96/x
  3. Step 3: Cross multiply
    161,315.68x = 222,546 × 100,780.96
  4. Step 4: Simplify right side
    161,315.68x = 22,428,399,524.16
  5. Step 5: Solve for x
    x = 22,428,399,524.16/161,315.68
  6. Step 6: Final answer
    x = 139,034.22

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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.