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Finding the Fourth Proportional to 144,311.63, 199,146.40 and 80,649.88

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Solution

The fourth proportional to 144,311.63, 199,146.40 and 80,649.88 is: 111,294.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,311.63 : 199,146.40 = 80,649.88 : x
  2. Step 2: Convert to fraction form
    144,311.63/199,146.40 = 80,649.88/x
  3. Step 3: Cross multiply
    144,311.63x = 199,146.40 × 80,649.88
  4. Step 4: Simplify right side
    144,311.63x = 16,061,132,562.94
  5. Step 5: Solve for x
    x = 16,061,132,562.94/144,311.63
  6. Step 6: Final answer
    x = 111,294.79

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1.5x scale

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.