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Finding the Fourth Proportional to 171,624.96, 257,474.88 and 71,789.76

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Solution

The fourth proportional to 171,624.96, 257,474.88 and 71,789.76 is: 107,700.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,624.96 : 257,474.88 = 71,789.76 : x
  2. Step 2: Convert to fraction form
    171,624.96/257,474.88 = 71,789.76/x
  3. Step 3: Cross multiply
    171,624.96x = 257,474.88 × 71,789.76
  4. Step 4: Simplify right side
    171,624.96x = 18,484,059,841.23
  5. Step 5: Solve for x
    x = 18,484,059,841.23/171,624.96
  6. Step 6: Final answer
    x = 107,700.30

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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.