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Finding the Fourth Proportional to 179,668.80, 247,989.60 and 108,129.60

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Solution

The fourth proportional to 179,668.80, 247,989.60 and 108,129.60 is: 149,246.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,668.80 : 247,989.60 = 108,129.60 : x
  2. Step 2: Convert to fraction form
    179,668.80/247,989.60 = 108,129.60/x
  3. Step 3: Cross multiply
    179,668.80x = 247,989.60 × 108,129.60
  4. Step 4: Simplify right side
    179,668.80x = 26,815,016,252.16
  5. Step 5: Solve for x
    x = 26,815,016,252.16/179,668.80
  6. Step 6: Final answer
    x = 149,246.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.