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Finding the Fourth Proportional to 179,668.80, 269,211.60 and 112,989.60

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Solution

The fourth proportional to 179,668.80, 269,211.60 and 112,989.60 is: 169,301.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,668.80 : 269,211.60 = 112,989.60 : x
  2. Step 2: Convert to fraction form
    179,668.80/269,211.60 = 112,989.60/x
  3. Step 3: Cross multiply
    179,668.80x = 269,211.60 × 112,989.60
  4. Step 4: Simplify right side
    179,668.80x = 30,418,110,999.36
  5. Step 5: Solve for x
    x = 30,418,110,999.36/179,668.80
  6. Step 6: Final answer
    x = 169,301.02

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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.