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Finding the Fourth Proportional to 171,974.64, 258,061.59 and 72,125.94

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Solution

The fourth proportional to 171,974.64, 258,061.59 and 72,125.94 is: 108,230.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,974.64 : 258,061.59 = 72,125.94 : x
  2. Step 2: Convert to fraction form
    171,974.64/258,061.59 = 72,125.94/x
  3. Step 3: Cross multiply
    171,974.64x = 258,061.59 × 72,125.94
  4. Step 4: Simplify right side
    171,974.64x = 18,612,934,756.64
  5. Step 5: Solve for x
    x = 18,612,934,756.64/171,974.64
  6. Step 6: Final answer
    x = 108,230.69

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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.