Home / 80,103.38-120,163.29-30,225.45

Finding the Fourth Proportional to 80,103.38, 120,163.29 and 30,225.45

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Solution

The fourth proportional to 80,103.38, 120,163.29 and 30,225.45 is: 45,341.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,103.38 : 120,163.29 = 30,225.45 : x
  2. Step 2: Convert to fraction form
    80,103.38/120,163.29 = 30,225.45/x
  3. Step 3: Cross multiply
    80,103.38x = 120,163.29 × 30,225.45
  4. Step 4: Simplify right side
    80,103.38x = 3,631,989,513.73
  5. Step 5: Solve for x
    x = 3,631,989,513.73/80,103.38
  6. Step 6: Final answer
    x = 45,341.28

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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.