Home / 161,213.29-222,405.33-100,678.84

Finding the Fourth Proportional to 161,213.29, 222,405.33 and 100,678.84

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Solution

The fourth proportional to 161,213.29, 222,405.33 and 100,678.84 is: 138,893.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,213.29 : 222,405.33 = 100,678.84 : x
  2. Step 2: Convert to fraction form
    161,213.29/222,405.33 = 100,678.84/x
  3. Step 3: Cross multiply
    161,213.29x = 222,405.33 × 100,678.84
  4. Step 4: Simplify right side
    161,213.29x = 22,391,510,634.22
  5. Step 5: Solve for x
    x = 22,391,510,634.22/161,213.29
  6. Step 6: Final answer
    x = 138,893.70

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1.5x scale

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.