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Finding the Fourth Proportional to 133,668.30, 200,502.45 and 81,050.70

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Solution

The fourth proportional to 133,668.30, 200,502.45 and 81,050.70 is: 121,576.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,668.30 : 200,502.45 = 81,050.70 : x
  2. Step 2: Convert to fraction form
    133,668.30/200,502.45 = 81,050.70/x
  3. Step 3: Cross multiply
    133,668.30x = 200,502.45 × 81,050.70
  4. Step 4: Simplify right side
    133,668.30x = 16,250,863,924.22
  5. Step 5: Solve for x
    x = 16,250,863,924.22/133,668.30
  6. Step 6: Final answer
    x = 121,576.05

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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.