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Finding the Fourth Proportional to 177,418.80, 266,128.20 and 111,279.60

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Solution

The fourth proportional to 177,418.80, 266,128.20 and 111,279.60 is: 166,919.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,418.80 : 266,128.20 = 111,279.60 : x
  2. Step 2: Convert to fraction form
    177,418.80/266,128.20 = 111,279.60/x
  3. Step 3: Cross multiply
    177,418.80x = 266,128.20 × 111,279.60
  4. Step 4: Simplify right side
    177,418.80x = 29,614,639,644.72
  5. Step 5: Solve for x
    x = 29,614,639,644.72/177,418.80
  6. Step 6: Final answer
    x = 166,919.40

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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.