Home / 145,576.08-200,887.29-81,918

Finding the Fourth Proportional to 145,576.08, 200,887.29 and 81,918

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Solution

The fourth proportional to 145,576.08, 200,887.29 and 81,918 is: 113,042.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,576.08 : 200,887.29 = 81,918 : x
  2. Step 2: Convert to fraction form
    145,576.08/200,887.29 = 81,918/x
  3. Step 3: Cross multiply
    145,576.08x = 200,887.29 × 81,918
  4. Step 4: Simplify right side
    145,576.08x = 16,456,285,022.22
  5. Step 5: Solve for x
    x = 16,456,285,022.22/145,576.08
  6. Step 6: Final answer
    x = 113,042.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.