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Finding the Fourth Proportional to 207,673.82, 311,303.69 and 87,761.02

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Solution

The fourth proportional to 207,673.82, 311,303.69 and 87,761.02 is: 131,554.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,673.82 : 311,303.69 = 87,761.02 : x
  2. Step 2: Convert to fraction form
    207,673.82/311,303.69 = 87,761.02/x
  3. Step 3: Cross multiply
    207,673.82x = 311,303.69 × 87,761.02
  4. Step 4: Simplify right side
    207,673.82x = 27,320,327,807.65
  5. Step 5: Solve for x
    x = 27,320,327,807.65/207,673.82
  6. Step 6: Final answer
    x = 131,554.03

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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.