Home / 126,045.41-188,623.85-78,682.73

Finding the Fourth Proportional to 126,045.41, 188,623.85 and 78,682.73

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Solution

The fourth proportional to 126,045.41, 188,623.85 and 78,682.73 is: 117,746.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,045.41 : 188,623.85 = 78,682.73 : x
  2. Step 2: Convert to fraction form
    126,045.41/188,623.85 = 78,682.73/x
  3. Step 3: Cross multiply
    126,045.41x = 188,623.85 × 78,682.73
  4. Step 4: Simplify right side
    126,045.41x = 14,841,438,124.58
  5. Step 5: Solve for x
    x = 14,841,438,124.58/126,045.41
  6. Step 6: Final answer
    x = 117,746.76

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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.