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Finding the Fourth Proportional to 171,523.80, 257,570.82 and 115,722.90

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Solution

The fourth proportional to 171,523.80, 257,570.82 and 115,722.90 is: 173,776.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,523.80 : 257,570.82 = 115,722.90 : x
  2. Step 2: Convert to fraction form
    171,523.80/257,570.82 = 115,722.90/x
  3. Step 3: Cross multiply
    171,523.80x = 257,570.82 × 115,722.90
  4. Step 4: Simplify right side
    171,523.80x = 29,806,842,245.78
  5. Step 5: Solve for x
    x = 29,806,842,245.78/171,523.80
  6. Step 6: Final answer
    x = 173,776.71

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1.5x scale

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.