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Finding the Fourth Proportional to 131,771.75, 181,846.49 and 71,343.65

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Solution

The fourth proportional to 131,771.75, 181,846.49 and 71,343.65 is: 98,455.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,771.75 : 181,846.49 = 71,343.65 : x
  2. Step 2: Convert to fraction form
    131,771.75/181,846.49 = 71,343.65/x
  3. Step 3: Cross multiply
    131,771.75x = 181,846.49 × 71,343.65
  4. Step 4: Simplify right side
    131,771.75x = 12,973,592,434.19
  5. Step 5: Solve for x
    x = 12,973,592,434.19/131,771.75
  6. Step 6: Final answer
    x = 98,455.04

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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.