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Finding the Fourth Proportional to 144,648.92, 199,613.28 and 80,989.00

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Solution

The fourth proportional to 144,648.92, 199,613.28 and 80,989.00 is: 111,763.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,648.92 : 199,613.28 = 80,989.00 : x
  2. Step 2: Convert to fraction form
    144,648.92/199,613.28 = 80,989.00/x
  3. Step 3: Cross multiply
    144,648.92x = 199,613.28 × 80,989.00
  4. Step 4: Simplify right side
    144,648.92x = 16,166,479,738.60
  5. Step 5: Solve for x
    x = 16,166,479,738.60/144,648.92
  6. Step 6: Final answer
    x = 111,763.57

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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.