Home / 131,692.64-181,704.20-80,008.70

Finding the Fourth Proportional to 131,692.64, 181,704.20 and 80,008.70

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Solution

The fourth proportional to 131,692.64, 181,704.20 and 80,008.70 is: 110,392.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,692.64 : 181,704.20 = 80,008.70 : x
  2. Step 2: Convert to fraction form
    131,692.64/181,704.20 = 80,008.70/x
  3. Step 3: Cross multiply
    131,692.64x = 181,704.20 × 80,008.70
  4. Step 4: Simplify right side
    131,692.64x = 14,537,915,517.98
  5. Step 5: Solve for x
    x = 14,537,915,517.98/131,692.64
  6. Step 6: Final answer
    x = 110,392.78

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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.