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Finding the Fourth Proportional to 171,984.71, 257,714.03 and 72,090.44

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Solution

The fourth proportional to 171,984.71, 257,714.03 and 72,090.44 is: 108,025.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,984.71 : 257,714.03 = 72,090.44 : x
  2. Step 2: Convert to fraction form
    171,984.71/257,714.03 = 72,090.44/x
  3. Step 3: Cross multiply
    171,984.71x = 257,714.03 × 72,090.44
  4. Step 4: Simplify right side
    171,984.71x = 18,578,716,167.85
  5. Step 5: Solve for x
    x = 18,578,716,167.85/171,984.71
  6. Step 6: Final answer
    x = 108,025.40

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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.