Home / 126,786.75-190,108.98-86,850.87

Finding the Fourth Proportional to 126,786.75, 190,108.98 and 86,850.87

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Solution

The fourth proportional to 126,786.75, 190,108.98 and 86,850.87 is: 130,227.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,786.75 : 190,108.98 = 86,850.87 : x
  2. Step 2: Convert to fraction form
    126,786.75/190,108.98 = 86,850.87/x
  3. Step 3: Cross multiply
    126,786.75x = 190,108.98 × 86,850.87
  4. Step 4: Simplify right side
    126,786.75x = 16,511,130,307.81
  5. Step 5: Solve for x
    x = 16,511,130,307.81/126,786.75
  6. Step 6: Final answer
    x = 130,227.57

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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.