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Finding the Fourth Proportional to 175,642.80, 263,464.20 and 80,872.80

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Solution

The fourth proportional to 175,642.80, 263,464.20 and 80,872.80 is: 121,309.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,642.80 : 263,464.20 = 80,872.80 : x
  2. Step 2: Convert to fraction form
    175,642.80/263,464.20 = 80,872.80/x
  3. Step 3: Cross multiply
    175,642.80x = 263,464.20 × 80,872.80
  4. Step 4: Simplify right side
    175,642.80x = 21,307,087,553.76
  5. Step 5: Solve for x
    x = 21,307,087,553.76/175,642.80
  6. Step 6: Final answer
    x = 121,309.20

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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.