Home / 172,634.28-258,753.78-72,644.64

Finding the Fourth Proportional to 172,634.28, 258,753.78 and 72,644.64

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Solution

The fourth proportional to 172,634.28, 258,753.78 and 72,644.64 is: 108,883.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,634.28 : 258,753.78 = 72,644.64 : x
  2. Step 2: Convert to fraction form
    172,634.28/258,753.78 = 72,644.64/x
  3. Step 3: Cross multiply
    172,634.28x = 258,753.78 × 72,644.64
  4. Step 4: Simplify right side
    172,634.28x = 18,797,075,196.74
  5. Step 5: Solve for x
    x = 18,797,075,196.74/172,634.28
  6. Step 6: Final answer
    x = 108,883.79

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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.