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Finding the Fourth Proportional to 177,819.60, 266,632.20 and 72,519.60

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Solution

The fourth proportional to 177,819.60, 266,632.20 and 72,519.60 is: 108,739.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,819.60 : 266,632.20 = 72,519.60 : x
  2. Step 2: Convert to fraction form
    177,819.60/266,632.20 = 72,519.60/x
  3. Step 3: Cross multiply
    177,819.60x = 266,632.20 × 72,519.60
  4. Step 4: Simplify right side
    177,819.60x = 19,336,060,491.12
  5. Step 5: Solve for x
    x = 19,336,060,491.12/177,819.60
  6. Step 6: Final answer
    x = 108,739.76

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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.