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Finding the Fourth Proportional to 131,771.72, 181,846.44 and 71,343.68

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Solution

The fourth proportional to 131,771.72, 181,846.44 and 71,343.68 is: 98,455.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,771.72 : 181,846.44 = 71,343.68 : x
  2. Step 2: Convert to fraction form
    131,771.72/181,846.44 = 71,343.68/x
  3. Step 3: Cross multiply
    131,771.72x = 181,846.44 × 71,343.68
  4. Step 4: Simplify right side
    131,771.72x = 12,973,594,224.50
  5. Step 5: Solve for x
    x = 12,973,594,224.50/131,771.72
  6. Step 6: Final answer
    x = 98,455.07

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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.