Home / 138,747.36-208,036.74-54,406.46

Finding the Fourth Proportional to 138,747.36, 208,036.74 and 54,406.46

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Solution

The fourth proportional to 138,747.36, 208,036.74 and 54,406.46 is: 81,576.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,747.36 : 208,036.74 = 54,406.46 : x
  2. Step 2: Convert to fraction form
    138,747.36/208,036.74 = 54,406.46/x
  3. Step 3: Cross multiply
    138,747.36x = 208,036.74 × 54,406.46
  4. Step 4: Simplify right side
    138,747.36x = 11,318,542,573.34
  5. Step 5: Solve for x
    x = 11,318,542,573.34/138,747.36
  6. Step 6: Final answer
    x = 81,576.63

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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.