Home / 120,536.22-180,834.45-85,066.80

Finding the Fourth Proportional to 120,536.22, 180,834.45 and 85,066.80

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Solution

The fourth proportional to 120,536.22, 180,834.45 and 85,066.80 is: 127,621.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,536.22 : 180,834.45 = 85,066.80 : x
  2. Step 2: Convert to fraction form
    120,536.22/180,834.45 = 85,066.80/x
  3. Step 3: Cross multiply
    120,536.22x = 180,834.45 × 85,066.80
  4. Step 4: Simplify right side
    120,536.22x = 15,383,007,991.26
  5. Step 5: Solve for x
    x = 15,383,007,991.26/120,536.22
  6. Step 6: Final answer
    x = 127,621.46

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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.