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Finding the Fourth Proportional to 131,786.68, 181,866.48 and 73,643.44

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Solution

The fourth proportional to 131,786.68, 181,866.48 and 73,643.44 is: 101,628.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,786.68 : 181,866.48 = 73,643.44 : x
  2. Step 2: Convert to fraction form
    131,786.68/181,866.48 = 73,643.44/x
  3. Step 3: Cross multiply
    131,786.68x = 181,866.48 × 73,643.44
  4. Step 4: Simplify right side
    131,786.68x = 13,393,273,207.89
  5. Step 5: Solve for x
    x = 13,393,273,207.89/131,786.68
  6. Step 6: Final answer
    x = 101,628.43

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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.