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Finding the Fourth Proportional to 171,496.60, 257,136.90 and 71,726.20

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Solution

The fourth proportional to 171,496.60, 257,136.90 and 71,726.20 is: 107,544.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,496.60 : 257,136.90 = 71,726.20 : x
  2. Step 2: Convert to fraction form
    171,496.60/257,136.90 = 71,726.20/x
  3. Step 3: Cross multiply
    171,496.60x = 257,136.90 × 71,726.20
  4. Step 4: Simplify right side
    171,496.60x = 18,443,452,716.78
  5. Step 5: Solve for x
    x = 18,443,452,716.78/171,496.60
  6. Step 6: Final answer
    x = 107,544.13

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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.