Home / 103,770.05-155,655.12-80,112.14

Finding the Fourth Proportional to 103,770.05, 155,655.12 and 80,112.14

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Solution

The fourth proportional to 103,770.05, 155,655.12 and 80,112.14 is: 120,168.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,770.05 : 155,655.12 = 80,112.14 : x
  2. Step 2: Convert to fraction form
    103,770.05/155,655.12 = 80,112.14/x
  3. Step 3: Cross multiply
    103,770.05x = 155,655.12 × 80,112.14
  4. Step 4: Simplify right side
    103,770.05x = 12,469,863,986.88
  5. Step 5: Solve for x
    x = 12,469,863,986.88/103,770.05
  6. Step 6: Final answer
    x = 120,168.24

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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.