Home / 161,361.32-222,661.56-89,729.78

Finding the Fourth Proportional to 161,361.32, 222,661.56 and 89,729.78

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Solution

The fourth proportional to 161,361.32, 222,661.56 and 89,729.78 is: 123,817.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,361.32 : 222,661.56 = 89,729.78 : x
  2. Step 2: Convert to fraction form
    161,361.32/222,661.56 = 89,729.78/x
  3. Step 3: Cross multiply
    161,361.32x = 222,661.56 × 89,729.78
  4. Step 4: Simplify right side
    161,361.32x = 19,979,372,793.26
  5. Step 5: Solve for x
    x = 19,979,372,793.26/161,361.32
  6. Step 6: Final answer
    x = 123,817.61

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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.