Home / 138,836.74-208,228.76-67,687.96

Finding the Fourth Proportional to 138,836.74, 208,228.76 and 67,687.96

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Solution

The fourth proportional to 138,836.74, 208,228.76 and 67,687.96 is: 101,519.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,836.74 : 208,228.76 = 67,687.96 : x
  2. Step 2: Convert to fraction form
    138,836.74/208,228.76 = 67,687.96/x
  3. Step 3: Cross multiply
    138,836.74x = 208,228.76 × 67,687.96
  4. Step 4: Simplify right side
    138,836.74x = 14,094,579,977.73
  5. Step 5: Solve for x
    x = 14,094,579,977.73/138,836.74
  6. Step 6: Final answer
    x = 101,519.09

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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.