Home / 127,200.88-190,781.16-76,627.36

Finding the Fourth Proportional to 127,200.88, 190,781.16 and 76,627.36

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Solution

The fourth proportional to 127,200.88, 190,781.16 and 76,627.36 is: 114,928.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,200.88 : 190,781.16 = 76,627.36 : x
  2. Step 2: Convert to fraction form
    127,200.88/190,781.16 = 76,627.36/x
  3. Step 3: Cross multiply
    127,200.88x = 190,781.16 × 76,627.36
  4. Step 4: Simplify right side
    127,200.88x = 14,619,056,628.54
  5. Step 5: Solve for x
    x = 14,619,056,628.54/127,200.88
  6. Step 6: Final answer
    x = 114,928.90

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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.