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Finding the Fourth Proportional to 171,449.80, 257,174.70 and 53,120.20

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Solution

The fourth proportional to 171,449.80, 257,174.70 and 53,120.20 is: 79,680.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,449.80 : 257,174.70 = 53,120.20 : x
  2. Step 2: Convert to fraction form
    171,449.80/257,174.70 = 53,120.20/x
  3. Step 3: Cross multiply
    171,449.80x = 257,174.70 × 53,120.20
  4. Step 4: Simplify right side
    171,449.80x = 13,661,171,498.94
  5. Step 5: Solve for x
    x = 13,661,171,498.94/171,449.80
  6. Step 6: Final answer
    x = 79,680.30

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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.