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Finding the Fourth Proportional to 171,189.17, 256,644.63 and 71,423.70

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Solution

The fourth proportional to 171,189.17, 256,644.63 and 71,423.70 is: 107,077.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,189.17 : 256,644.63 = 71,423.70 : x
  2. Step 2: Convert to fraction form
    171,189.17/256,644.63 = 71,423.70/x
  3. Step 3: Cross multiply
    171,189.17x = 256,644.63 × 71,423.70
  4. Step 4: Simplify right side
    171,189.17x = 18,330,509,059.73
  5. Step 5: Solve for x
    x = 18,330,509,059.73/171,189.17
  6. Step 6: Final answer
    x = 107,077.51

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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.