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Finding the Fourth Proportional to 172,886.92, 259,150.56 and 72,963.70

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Solution

The fourth proportional to 172,886.92, 259,150.56 and 72,963.70 is: 109,369.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,886.92 : 259,150.56 = 72,963.70 : x
  2. Step 2: Convert to fraction form
    172,886.92/259,150.56 = 72,963.70/x
  3. Step 3: Cross multiply
    172,886.92x = 259,150.56 × 72,963.70
  4. Step 4: Simplify right side
    172,886.92x = 18,908,583,714.67
  5. Step 5: Solve for x
    x = 18,908,583,714.67/172,886.92
  6. Step 6: Final answer
    x = 109,369.66

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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.