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Finding the Fourth Proportional to 195,393.93, 269,672.61 and 123,780.61

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Solution

The fourth proportional to 195,393.93, 269,672.61 and 123,780.61 is: 170,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,393.93 : 269,672.61 = 123,780.61 : x
  2. Step 2: Convert to fraction form
    195,393.93/269,672.61 = 123,780.61/x
  3. Step 3: Cross multiply
    195,393.93x = 269,672.61 × 123,780.61
  4. Step 4: Simplify right side
    195,393.93x = 33,380,240,166.09
  5. Step 5: Solve for x
    x = 33,380,240,166.09/195,393.93
  6. Step 6: Final answer
    x = 170,835.60

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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.