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Finding the Fourth Proportional to 172,509.85, 258,682.92 and 60,176.42

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Solution

The fourth proportional to 172,509.85, 258,682.92 and 60,176.42 is: 90,236.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,509.85 : 258,682.92 = 60,176.42 : x
  2. Step 2: Convert to fraction form
    172,509.85/258,682.92 = 60,176.42/x
  3. Step 3: Cross multiply
    172,509.85x = 258,682.92 × 60,176.42
  4. Step 4: Simplify right side
    172,509.85x = 15,566,611,491.73
  5. Step 5: Solve for x
    x = 15,566,611,491.73/172,509.85
  6. Step 6: Final answer
    x = 90,236.07

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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.