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Finding the Fourth Proportional to 168,249.72, 252,486.81 and 87,271.38

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Solution

The fourth proportional to 168,249.72, 252,486.81 and 87,271.38 is: 130,965.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,249.72 : 252,486.81 = 87,271.38 : x
  2. Step 2: Convert to fraction form
    168,249.72/252,486.81 = 87,271.38/x
  3. Step 3: Cross multiply
    168,249.72x = 252,486.81 × 87,271.38
  4. Step 4: Simplify right side
    168,249.72x = 22,034,871,078.06
  5. Step 5: Solve for x
    x = 22,034,871,078.06/168,249.72
  6. Step 6: Final answer
    x = 130,965.28

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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.