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Finding the Fourth Proportional to 172,685.99, 259,205.67 and 142,604.42

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Solution

The fourth proportional to 172,685.99, 259,205.67 and 142,604.42 is: 214,052.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,685.99 : 259,205.67 = 142,604.42 : x
  2. Step 2: Convert to fraction form
    172,685.99/259,205.67 = 142,604.42/x
  3. Step 3: Cross multiply
    172,685.99x = 259,205.67 × 142,604.42
  4. Step 4: Simplify right side
    172,685.99x = 36,963,872,935.03
  5. Step 5: Solve for x
    x = 36,963,872,935.03/172,685.99
  6. Step 6: Final answer
    x = 214,052.53

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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.