Home / 137,678.88-206,493.76-87,610.36

Finding the Fourth Proportional to 137,678.88, 206,493.76 and 87,610.36

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Solution

The fourth proportional to 137,678.88, 206,493.76 and 87,610.36 is: 131,399.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,678.88 : 206,493.76 = 87,610.36 : x
  2. Step 2: Convert to fraction form
    137,678.88/206,493.76 = 87,610.36/x
  3. Step 3: Cross multiply
    137,678.88x = 206,493.76 × 87,610.36
  4. Step 4: Simplify right side
    137,678.88x = 18,090,992,651.35
  5. Step 5: Solve for x
    x = 18,090,992,651.35/137,678.88
  6. Step 6: Final answer
    x = 131,399.91

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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.