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Finding the Fourth Proportional to 170,104.88, 254,991.80 and 81,335.36

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Solution

The fourth proportional to 170,104.88, 254,991.80 and 81,335.36 is: 121,923.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,104.88 : 254,991.80 = 81,335.36 : x
  2. Step 2: Convert to fraction form
    170,104.88/254,991.80 = 81,335.36/x
  3. Step 3: Cross multiply
    170,104.88x = 254,991.80 × 81,335.36
  4. Step 4: Simplify right side
    170,104.88x = 20,739,849,850.05
  5. Step 5: Solve for x
    x = 20,739,849,850.05/170,104.88
  6. Step 6: Final answer
    x = 121,923.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.