Home / 126,516.11-174,523.11-81,143.60

Finding the Fourth Proportional to 126,516.11, 174,523.11 and 81,143.60

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Solution

The fourth proportional to 126,516.11, 174,523.11 and 81,143.60 is: 111,933.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,516.11 : 174,523.11 = 81,143.60 : x
  2. Step 2: Convert to fraction form
    126,516.11/174,523.11 = 81,143.60/x
  3. Step 3: Cross multiply
    126,516.11x = 174,523.11 × 81,143.60
  4. Step 4: Simplify right side
    126,516.11x = 14,161,432,251.69
  5. Step 5: Solve for x
    x = 14,161,432,251.69/126,516.11
  6. Step 6: Final answer
    x = 111,933.83

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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.