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Finding the Fourth Proportional to 171,586.93, 257,292.63 and 71,719.87

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Solution

The fourth proportional to 171,586.93, 257,292.63 and 71,719.87 is: 107,543.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,586.93 : 257,292.63 = 71,719.87 : x
  2. Step 2: Convert to fraction form
    171,586.93/257,292.63 = 71,719.87/x
  3. Step 3: Cross multiply
    171,586.93x = 257,292.63 × 71,719.87
  4. Step 4: Simplify right side
    171,586.93x = 18,452,993,975.56
  5. Step 5: Solve for x
    x = 18,452,993,975.56/171,586.93
  6. Step 6: Final answer
    x = 107,543.12

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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.