Home / 80,601.66-120,888.99-21,438.18

Finding the Fourth Proportional to 80,601.66, 120,888.99 and 21,438.18

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Solution

The fourth proportional to 80,601.66, 120,888.99 and 21,438.18 is: 32,153.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,601.66 : 120,888.99 = 21,438.18 : x
  2. Step 2: Convert to fraction form
    80,601.66/120,888.99 = 21,438.18/x
  3. Step 3: Cross multiply
    80,601.66x = 120,888.99 × 21,438.18
  4. Step 4: Simplify right side
    80,601.66x = 2,591,639,927.64
  5. Step 5: Solve for x
    x = 2,591,639,927.64/80,601.66
  6. Step 6: Final answer
    x = 32,153.68

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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.