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Finding the Fourth Proportional to 172,268.96, 258,405.44 and 45,908.48

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Solution

The fourth proportional to 172,268.96, 258,405.44 and 45,908.48 is: 68,863.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,268.96 : 258,405.44 = 45,908.48 : x
  2. Step 2: Convert to fraction form
    172,268.96/258,405.44 = 45,908.48/x
  3. Step 3: Cross multiply
    172,268.96x = 258,405.44 × 45,908.48
  4. Step 4: Simplify right side
    172,268.96x = 11,863,000,974.13
  5. Step 5: Solve for x
    x = 11,863,000,974.13/172,268.96
  6. Step 6: Final answer
    x = 68,863.25

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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.