Home / 135,729.90-187,305.62-75,299.04

Finding the Fourth Proportional to 135,729.90, 187,305.62 and 75,299.04

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Solution

The fourth proportional to 135,729.90, 187,305.62 and 75,299.04 is: 103,911.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,729.90 : 187,305.62 = 75,299.04 : x
  2. Step 2: Convert to fraction form
    135,729.90/187,305.62 = 75,299.04/x
  3. Step 3: Cross multiply
    135,729.90x = 187,305.62 × 75,299.04
  4. Step 4: Simplify right side
    135,729.90x = 14,103,932,996.11
  5. Step 5: Solve for x
    x = 14,103,932,996.11/135,729.90
  6. Step 6: Final answer
    x = 103,911.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.