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Finding the Fourth Proportional to 91,243.94, 125,002.11 and 87,832.57

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Solution

The fourth proportional to 91,243.94, 125,002.11 and 87,832.57 is: 120,328.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,243.94 : 125,002.11 = 87,832.57 : x
  2. Step 2: Convert to fraction form
    91,243.94/125,002.11 = 87,832.57/x
  3. Step 3: Cross multiply
    91,243.94x = 125,002.11 × 87,832.57
  4. Step 4: Simplify right side
    91,243.94x = 10,979,256,576.72
  5. Step 5: Solve for x
    x = 10,979,256,576.72/91,243.94
  6. Step 6: Final answer
    x = 120,328.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.