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Finding the Fourth Proportional to 133,670.30, 200,505.45 and 81,052.70

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Solution

The fourth proportional to 133,670.30, 200,505.45 and 81,052.70 is: 121,579.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,670.30 : 200,505.45 = 81,052.70 : x
  2. Step 2: Convert to fraction form
    133,670.30/200,505.45 = 81,052.70/x
  3. Step 3: Cross multiply
    133,670.30x = 200,505.45 × 81,052.70
  4. Step 4: Simplify right side
    133,670.30x = 16,251,508,087.22
  5. Step 5: Solve for x
    x = 16,251,508,087.22/133,670.30
  6. Step 6: Final answer
    x = 121,579.05

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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.