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Finding the Fourth Proportional to 172,957.60, 258,967.41 and 89,676.64

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Solution

The fourth proportional to 172,957.60, 258,967.41 and 89,676.64 is: 134,271.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,957.60 : 258,967.41 = 89,676.64 : x
  2. Step 2: Convert to fraction form
    172,957.60/258,967.41 = 89,676.64/x
  3. Step 3: Cross multiply
    172,957.60x = 258,967.41 × 89,676.64
  4. Step 4: Simplify right side
    172,957.60x = 23,223,327,198.30
  5. Step 5: Solve for x
    x = 23,223,327,198.30/172,957.60
  6. Step 6: Final answer
    x = 134,271.79

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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.