Home / 120,307.68-180,405.83-67,717.15

Finding the Fourth Proportional to 120,307.68, 180,405.83 and 67,717.15

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Solution

The fourth proportional to 120,307.68, 180,405.83 and 67,717.15 is: 101,544.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,307.68 : 180,405.83 = 67,717.15 : x
  2. Step 2: Convert to fraction form
    120,307.68/180,405.83 = 67,717.15/x
  3. Step 3: Cross multiply
    120,307.68x = 180,405.83 × 67,717.15
  4. Step 4: Simplify right side
    120,307.68x = 12,216,568,369.26
  5. Step 5: Solve for x
    x = 12,216,568,369.26/120,307.68
  6. Step 6: Final answer
    x = 101,544.38

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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.