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Finding the Fourth Proportional to 172,256.76, 258,260.40 and 53,863.92

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Solution

The fourth proportional to 172,256.76, 258,260.40 and 53,863.92 is: 80,756.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,256.76 : 258,260.40 = 53,863.92 : x
  2. Step 2: Convert to fraction form
    172,256.76/258,260.40 = 53,863.92/x
  3. Step 3: Cross multiply
    172,256.76x = 258,260.40 × 53,863.92
  4. Step 4: Simplify right side
    172,256.76x = 13,910,917,524.77
  5. Step 5: Solve for x
    x = 13,910,917,524.77/172,256.76
  6. Step 6: Final answer
    x = 80,756.87

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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.