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Finding the Fourth Proportional to 171,475.68, 257,213.54 and 71,581.36

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Solution

The fourth proportional to 171,475.68, 257,213.54 and 71,581.36 is: 107,372.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,475.68 : 257,213.54 = 71,581.36 : x
  2. Step 2: Convert to fraction form
    171,475.68/257,213.54 = 71,581.36/x
  3. Step 3: Cross multiply
    171,475.68x = 257,213.54 × 71,581.36
  4. Step 4: Simplify right side
    171,475.68x = 18,411,695,003.61
  5. Step 5: Solve for x
    x = 18,411,695,003.61/171,475.68
  6. Step 6: Final answer
    x = 107,372.05

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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.