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Finding the Fourth Proportional to 133,361.56, 183,743.58 and 87,959.44

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Solution

The fourth proportional to 133,361.56, 183,743.58 and 87,959.44 is: 121,189.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,361.56 : 183,743.58 = 87,959.44 : x
  2. Step 2: Convert to fraction form
    133,361.56/183,743.58 = 87,959.44/x
  3. Step 3: Cross multiply
    133,361.56x = 183,743.58 × 87,959.44
  4. Step 4: Simplify right side
    133,361.56x = 16,161,982,400.40
  5. Step 5: Solve for x
    x = 16,161,982,400.40/133,361.56
  6. Step 6: Final answer
    x = 121,189.21

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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.