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Finding the Fourth Proportional to 133,258.84, 183,879.44 and 85,576.78

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Solution

The fourth proportional to 133,258.84, 183,879.44 and 85,576.78 is: 118,084.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,258.84 : 183,879.44 = 85,576.78 : x
  2. Step 2: Convert to fraction form
    133,258.84/183,879.44 = 85,576.78/x
  3. Step 3: Cross multiply
    133,258.84x = 183,879.44 × 85,576.78
  4. Step 4: Simplify right side
    133,258.84x = 15,735,810,383.40
  5. Step 5: Solve for x
    x = 15,735,810,383.40/133,258.84
  6. Step 6: Final answer
    x = 118,084.55

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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.