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Finding the Fourth Proportional to 115,266, 172,899 and 32,160

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Solution

The fourth proportional to 115,266, 172,899 and 32,160 is: 48,240

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,266 : 172,899 = 32,160 : x
  2. Step 2: Convert to fraction form
    115,266/172,899 = 32,160/x
  3. Step 3: Cross multiply
    115,266x = 172,899 × 32,160
  4. Step 4: Simplify right side
    115,266x = 5,560,431,840
  5. Step 5: Solve for x
    x = 5,560,431,840/115,266
  6. Step 6: Final answer
    x = 48,240

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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.