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Finding the Fourth Proportional to 172,158.42, 258,187.41 and 66,952.38

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Solution

The fourth proportional to 172,158.42, 258,187.41 and 66,952.38 is: 100,409.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,158.42 : 258,187.41 = 66,952.38 : x
  2. Step 2: Convert to fraction form
    172,158.42/258,187.41 = 66,952.38/x
  3. Step 3: Cross multiply
    172,158.42x = 258,187.41 × 66,952.38
  4. Step 4: Simplify right side
    172,158.42x = 17,286,261,585.54
  5. Step 5: Solve for x
    x = 17,286,261,585.54/172,158.42
  6. Step 6: Final answer
    x = 100,409.04

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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.