Home / 126,190.98-188,842.14-78,828.39

Finding the Fourth Proportional to 126,190.98, 188,842.14 and 78,828.39

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Solution

The fourth proportional to 126,190.98, 188,842.14 and 78,828.39 is: 117,965.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,190.98 : 188,842.14 = 78,828.39 : x
  2. Step 2: Convert to fraction form
    126,190.98/188,842.14 = 78,828.39/x
  3. Step 3: Cross multiply
    126,190.98x = 188,842.14 × 78,828.39
  4. Step 4: Simplify right side
    126,190.98x = 14,886,121,860.35
  5. Step 5: Solve for x
    x = 14,886,121,860.35/126,190.98
  6. Step 6: Final answer
    x = 117,965.02

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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.