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Finding the Fourth Proportional to 172,621.44, 258,957.54 and 88,429.14

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Solution

The fourth proportional to 172,621.44, 258,957.54 and 88,429.14 is: 132,656.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,621.44 : 258,957.54 = 88,429.14 : x
  2. Step 2: Convert to fraction form
    172,621.44/258,957.54 = 88,429.14/x
  3. Step 3: Cross multiply
    172,621.44x = 258,957.54 × 88,429.14
  4. Step 4: Simplify right side
    172,621.44x = 22,899,392,558.72
  5. Step 5: Solve for x
    x = 22,899,392,558.72/172,621.44
  6. Step 6: Final answer
    x = 132,656.71

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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.