Home / 138,014.40-206,710.56-82,493.76

Finding the Fourth Proportional to 138,014.40, 206,710.56 and 82,493.76

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Solution

The fourth proportional to 138,014.40, 206,710.56 and 82,493.76 is: 123,554.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,014.40 : 206,710.56 = 82,493.76 : x
  2. Step 2: Convert to fraction form
    138,014.40/206,710.56 = 82,493.76/x
  3. Step 3: Cross multiply
    138,014.40x = 206,710.56 × 82,493.76
  4. Step 4: Simplify right side
    138,014.40x = 17,052,331,326.11
  5. Step 5: Solve for x
    x = 17,052,331,326.11/138,014.40
  6. Step 6: Final answer
    x = 123,554.73

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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.