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Finding the Fourth Proportional to 172,950.80, 259,474.80 and 84,207.20

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Solution

The fourth proportional to 172,950.80, 259,474.80 and 84,207.20 is: 126,334.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,950.80 : 259,474.80 = 84,207.20 : x
  2. Step 2: Convert to fraction form
    172,950.80/259,474.80 = 84,207.20/x
  3. Step 3: Cross multiply
    172,950.80x = 259,474.80 × 84,207.20
  4. Step 4: Simplify right side
    172,950.80x = 21,849,646,378.56
  5. Step 5: Solve for x
    x = 21,849,646,378.56/172,950.80
  6. Step 6: Final answer
    x = 126,334.46

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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.