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Finding the Fourth Proportional to 80,124.84, 120,187.62 and 20,960.64

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Solution

The fourth proportional to 80,124.84, 120,187.62 and 20,960.64 is: 31,441.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,124.84 : 120,187.62 = 20,960.64 : x
  2. Step 2: Convert to fraction form
    80,124.84/120,187.62 = 20,960.64/x
  3. Step 3: Cross multiply
    80,124.84x = 120,187.62 × 20,960.64
  4. Step 4: Simplify right side
    80,124.84x = 2,519,209,435.28
  5. Step 5: Solve for x
    x = 2,519,209,435.28/80,124.84
  6. Step 6: Final answer
    x = 31,441.05

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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.