Home / 80,124.81-120,178.04-20,966.19

Finding the Fourth Proportional to 80,124.81, 120,178.04 and 20,966.19

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Solution

The fourth proportional to 80,124.81, 120,178.04 and 20,966.19 is: 31,446.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,124.81 : 120,178.04 = 20,966.19 : x
  2. Step 2: Convert to fraction form
    80,124.81/120,178.04 = 20,966.19/x
  3. Step 3: Cross multiply
    80,124.81x = 120,178.04 × 20,966.19
  4. Step 4: Simplify right side
    80,124.81x = 2,519,675,515.64
  5. Step 5: Solve for x
    x = 2,519,675,515.64/80,124.81
  6. Step 6: Final answer
    x = 31,446.88

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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.