Home / 90,996.67-136,505.94-86,020.03

Finding the Fourth Proportional to 90,996.67, 136,505.94 and 86,020.03

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Solution

The fourth proportional to 90,996.67, 136,505.94 and 86,020.03 is: 129,040.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,996.67 : 136,505.94 = 86,020.03 : x
  2. Step 2: Convert to fraction form
    90,996.67/136,505.94 = 86,020.03/x
  3. Step 3: Cross multiply
    90,996.67x = 136,505.94 × 86,020.03
  4. Step 4: Simplify right side
    90,996.67x = 11,742,245,053.98
  5. Step 5: Solve for x
    x = 11,742,245,053.98/90,996.67
  6. Step 6: Final answer
    x = 129,040.38

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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.