Home / 120,153.82-180,243.05-45,336.92

Finding the Fourth Proportional to 120,153.82, 180,243.05 and 45,336.92

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Solution

The fourth proportional to 120,153.82, 180,243.05 and 45,336.92 is: 68,010.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,153.82 : 180,243.05 = 45,336.92 : x
  2. Step 2: Convert to fraction form
    120,153.82/180,243.05 = 45,336.92/x
  3. Step 3: Cross multiply
    120,153.82x = 180,243.05 × 45,336.92
  4. Step 4: Simplify right side
    120,153.82x = 8,171,664,401.14
  5. Step 5: Solve for x
    x = 8,171,664,401.14/120,153.82
  6. Step 6: Final answer
    x = 68,010.03

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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.