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Finding the Fourth Proportional to 133,687.80, 200,138.04 and 98,783.28

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Solution

The fourth proportional to 133,687.80, 200,138.04 and 98,783.28 is: 147,884.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,687.80 : 200,138.04 = 98,783.28 : x
  2. Step 2: Convert to fraction form
    133,687.80/200,138.04 = 98,783.28/x
  3. Step 3: Cross multiply
    133,687.80x = 200,138.04 × 98,783.28
  4. Step 4: Simplify right side
    133,687.80x = 19,770,292,043.97
  5. Step 5: Solve for x
    x = 19,770,292,043.97/133,687.80
  6. Step 6: Final answer
    x = 147,884.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.