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Finding the Fourth Proportional to 171,530.34, 257,365.98 and 71,711.61

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Solution

The fourth proportional to 171,530.34, 257,365.98 and 71,711.61 is: 107,596.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,530.34 : 257,365.98 = 71,711.61 : x
  2. Step 2: Convert to fraction form
    171,530.34/257,365.98 = 71,711.61/x
  3. Step 3: Cross multiply
    171,530.34x = 257,365.98 × 71,711.61
  4. Step 4: Simplify right side
    171,530.34x = 18,456,128,785.03
  5. Step 5: Solve for x
    x = 18,456,128,785.03/171,530.34
  6. Step 6: Final answer
    x = 107,596.88

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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.