Home / 120,090.14-180,107.82-45,218.18

Finding the Fourth Proportional to 120,090.14, 180,107.82 and 45,218.18

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Solution

The fourth proportional to 120,090.14, 180,107.82 and 45,218.18 is: 67,816.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,090.14 : 180,107.82 = 45,218.18 : x
  2. Step 2: Convert to fraction form
    120,090.14/180,107.82 = 45,218.18/x
  3. Step 3: Cross multiply
    120,090.14x = 180,107.82 × 45,218.18
  4. Step 4: Simplify right side
    120,090.14x = 8,144,147,824.17
  5. Step 5: Solve for x
    x = 8,144,147,824.17/120,090.14
  6. Step 6: Final answer
    x = 67,816.96

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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.