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Finding the Fourth Proportional to 171,553.68, 257,242.77 and 71,686.62

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Solution

The fourth proportional to 171,553.68, 257,242.77 and 71,686.62 is: 107,493.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,553.68 : 257,242.77 = 71,686.62 : x
  2. Step 2: Convert to fraction form
    171,553.68/257,242.77 = 71,686.62/x
  3. Step 3: Cross multiply
    171,553.68x = 257,242.77 × 71,686.62
  4. Step 4: Simplify right side
    171,553.68x = 18,440,864,700.74
  5. Step 5: Solve for x
    x = 18,440,864,700.74/171,553.68
  6. Step 6: Final answer
    x = 107,493.26

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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.