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Finding the Fourth Proportional to 171,658.20, 257,487.30 and 118,514.10

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Solution

The fourth proportional to 171,658.20, 257,487.30 and 118,514.10 is: 177,771.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,658.20 : 257,487.30 = 118,514.10 : x
  2. Step 2: Convert to fraction form
    171,658.20/257,487.30 = 118,514.10/x
  3. Step 3: Cross multiply
    171,658.20x = 257,487.30 × 118,514.10
  4. Step 4: Simplify right side
    171,658.20x = 30,515,875,620.93
  5. Step 5: Solve for x
    x = 30,515,875,620.93/171,658.20
  6. Step 6: Final answer
    x = 177,771.15

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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.