Home / 120,221.99-180,215.80-50,121.35

Finding the Fourth Proportional to 120,221.99, 180,215.80 and 50,121.35

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Solution

The fourth proportional to 120,221.99, 180,215.80 and 50,121.35 is: 75,133.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,221.99 : 180,215.80 = 50,121.35 : x
  2. Step 2: Convert to fraction form
    120,221.99/180,215.80 = 50,121.35/x
  3. Step 3: Cross multiply
    120,221.99x = 180,215.80 × 50,121.35
  4. Step 4: Simplify right side
    120,221.99x = 9,032,659,187.33
  5. Step 5: Solve for x
    x = 9,032,659,187.33/120,221.99
  6. Step 6: Final answer
    x = 75,133.17

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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.