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Finding the Fourth Proportional to 120,168.84, 180,265.62 and 45,351.98

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Solution

The fourth proportional to 120,168.84, 180,265.62 and 45,351.98 is: 68,032.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,168.84 : 180,265.62 = 45,351.98 : x
  2. Step 2: Convert to fraction form
    120,168.84/180,265.62 = 45,351.98/x
  3. Step 3: Cross multiply
    120,168.84x = 180,265.62 × 45,351.98
  4. Step 4: Simplify right side
    120,168.84x = 8,175,401,891.60
  5. Step 5: Solve for x
    x = 8,175,401,891.60/120,168.84
  6. Step 6: Final answer
    x = 68,032.63

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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.