Home / 126,889.49-190,126.60-76,817.82

Finding the Fourth Proportional to 126,889.49, 190,126.60 and 76,817.82

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Solution

The fourth proportional to 126,889.49, 190,126.60 and 76,817.82 is: 115,101.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,889.49 : 190,126.60 = 76,817.82 : x
  2. Step 2: Convert to fraction form
    126,889.49/190,126.60 = 76,817.82/x
  3. Step 3: Cross multiply
    126,889.49x = 190,126.60 × 76,817.82
  4. Step 4: Simplify right side
    126,889.49x = 14,605,111,456.94
  5. Step 5: Solve for x
    x = 14,605,111,456.94/126,889.49
  6. Step 6: Final answer
    x = 115,101.03

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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.