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Finding the Fourth Proportional to 171,396.80, 257,095.20 and 71,523.80

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Solution

The fourth proportional to 171,396.80, 257,095.20 and 71,523.80 is: 107,285.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,396.80 : 257,095.20 = 71,523.80 : x
  2. Step 2: Convert to fraction form
    171,396.80/257,095.20 = 71,523.80/x
  3. Step 3: Cross multiply
    171,396.80x = 257,095.20 × 71,523.80
  4. Step 4: Simplify right side
    171,396.80x = 18,388,425,665.76
  5. Step 5: Solve for x
    x = 18,388,425,665.76/171,396.80
  6. Step 6: Final answer
    x = 107,285.70

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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.