Home / 127,406.12-191,137.80-43,161.44

Finding the Fourth Proportional to 127,406.12, 191,137.80 and 43,161.44

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Solution

The fourth proportional to 127,406.12, 191,137.80 and 43,161.44 is: 64,751.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,406.12 : 191,137.80 = 43,161.44 : x
  2. Step 2: Convert to fraction form
    127,406.12/191,137.80 = 43,161.44/x
  3. Step 3: Cross multiply
    127,406.12x = 191,137.80 × 43,161.44
  4. Step 4: Simplify right side
    127,406.12x = 8,249,782,686.43
  5. Step 5: Solve for x
    x = 8,249,782,686.43/127,406.12
  6. Step 6: Final answer
    x = 64,751.86

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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.