Home / 127,208.88-190,793.16-76,635.36

Finding the Fourth Proportional to 127,208.88, 190,793.16 and 76,635.36

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Solution

The fourth proportional to 127,208.88, 190,793.16 and 76,635.36 is: 114,940.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,208.88 : 190,793.16 = 76,635.36 : x
  2. Step 2: Convert to fraction form
    127,208.88/190,793.16 = 76,635.36/x
  3. Step 3: Cross multiply
    127,208.88x = 190,793.16 × 76,635.36
  4. Step 4: Simplify right side
    127,208.88x = 14,621,502,502.14
  5. Step 5: Solve for x
    x = 14,621,502,502.14/127,208.88
  6. Step 6: Final answer
    x = 114,940.89

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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.