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Finding the Fourth Proportional to 172,471.48, 258,874.06 and 124,489.55

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Solution

The fourth proportional to 172,471.48, 258,874.06 and 124,489.55 is: 186,854.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,471.48 : 258,874.06 = 124,489.55 : x
  2. Step 2: Convert to fraction form
    172,471.48/258,874.06 = 124,489.55/x
  3. Step 3: Cross multiply
    172,471.48x = 258,874.06 × 124,489.55
  4. Step 4: Simplify right side
    172,471.48x = 32,227,115,236.07
  5. Step 5: Solve for x
    x = 32,227,115,236.07/172,471.48
  6. Step 6: Final answer
    x = 186,854.75

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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.