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Finding the Fourth Proportional to 138,029.00, 207,043.56 and 43,266.56

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Solution

The fourth proportional to 138,029.00, 207,043.56 and 43,266.56 is: 64,899.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,029.00 : 207,043.56 = 43,266.56 : x
  2. Step 2: Convert to fraction form
    138,029.00/207,043.56 = 43,266.56/x
  3. Step 3: Cross multiply
    138,029.00x = 207,043.56 × 43,266.56
  4. Step 4: Simplify right side
    138,029.00x = 8,958,061,576.14
  5. Step 5: Solve for x
    x = 8,958,061,576.14/138,029.00
  6. Step 6: Final answer
    x = 64,899.85

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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.