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Finding the Fourth Proportional to 133,326.70, 200,119.65 and 80,838.70

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Solution

The fourth proportional to 133,326.70, 200,119.65 and 80,838.70 is: 121,336.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,326.70 : 200,119.65 = 80,838.70 : x
  2. Step 2: Convert to fraction form
    133,326.70/200,119.65 = 80,838.70/x
  3. Step 3: Cross multiply
    133,326.70x = 200,119.65 × 80,838.70
  4. Step 4: Simplify right side
    133,326.70x = 16,177,412,350.46
  5. Step 5: Solve for x
    x = 16,177,412,350.46/133,326.70
  6. Step 6: Final answer
    x = 121,336.63

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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.