Home / 171,939.51-257,826.30-72,072.88

Finding the Fourth Proportional to 171,939.51, 257,826.30 and 72,072.88

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Solution

The fourth proportional to 171,939.51, 257,826.30 and 72,072.88 is: 108,074.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,939.51 : 257,826.30 = 72,072.88 : x
  2. Step 2: Convert to fraction form
    171,939.51/257,826.30 = 72,072.88/x
  3. Step 3: Cross multiply
    171,939.51x = 257,826.30 × 72,072.88
  4. Step 4: Simplify right side
    171,939.51x = 18,582,284,805.49
  5. Step 5: Solve for x
    x = 18,582,284,805.49/171,939.51
  6. Step 6: Final answer
    x = 108,074.55

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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.