Home / 120,069.20-180,103.80-45,206.14

Finding the Fourth Proportional to 120,069.20, 180,103.80 and 45,206.14

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Solution

The fourth proportional to 120,069.20, 180,103.80 and 45,206.14 is: 67,809.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,069.20 : 180,103.80 = 45,206.14 : x
  2. Step 2: Convert to fraction form
    120,069.20/180,103.80 = 45,206.14/x
  3. Step 3: Cross multiply
    120,069.20x = 180,103.80 × 45,206.14
  4. Step 4: Simplify right side
    120,069.20x = 8,141,797,597.33
  5. Step 5: Solve for x
    x = 8,141,797,597.33/120,069.20
  6. Step 6: Final answer
    x = 67,809.21

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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.