Home / 126,137.34-188,991.90-76,112.32

Finding the Fourth Proportional to 126,137.34, 188,991.90 and 76,112.32

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Solution

The fourth proportional to 126,137.34, 188,991.90 and 76,112.32 is: 114,039.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,137.34 : 188,991.90 = 76,112.32 : x
  2. Step 2: Convert to fraction form
    126,137.34/188,991.90 = 76,112.32/x
  3. Step 3: Cross multiply
    126,137.34x = 188,991.90 × 76,112.32
  4. Step 4: Simplify right side
    126,137.34x = 14,384,611,779.93
  5. Step 5: Solve for x
    x = 14,384,611,779.93/126,137.34
  6. Step 6: Final answer
    x = 114,039.28

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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.