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Finding the Fourth Proportional to 172,481.49, 258,618.51 and 65,872.53

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Solution

The fourth proportional to 172,481.49, 258,618.51 and 65,872.53 is: 98,769.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,481.49 : 258,618.51 = 65,872.53 : x
  2. Step 2: Convert to fraction form
    172,481.49/258,618.51 = 65,872.53/x
  3. Step 3: Cross multiply
    172,481.49x = 258,618.51 × 65,872.53
  4. Step 4: Simplify right side
    172,481.49x = 17,035,855,558.53
  5. Step 5: Solve for x
    x = 17,035,855,558.53/172,481.49
  6. Step 6: Final answer
    x = 98,769.18

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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.