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Finding the Fourth Proportional to 80,123.44, 120,191.98 and 20,959.02

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Solution

The fourth proportional to 80,123.44, 120,191.98 and 20,959.02 is: 31,440.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,123.44 : 120,191.98 = 20,959.02 : x
  2. Step 2: Convert to fraction form
    80,123.44/120,191.98 = 20,959.02/x
  3. Step 3: Cross multiply
    80,123.44x = 120,191.98 × 20,959.02
  4. Step 4: Simplify right side
    80,123.44x = 2,519,106,112.66
  5. Step 5: Solve for x
    x = 2,519,106,112.66/80,123.44
  6. Step 6: Final answer
    x = 31,440.31

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1.5x scale

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.