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Finding the Fourth Proportional to 66,168.25, 99,252.38 and 16,920.25

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Solution

The fourth proportional to 66,168.25, 99,252.38 and 16,920.25 is: 25,380.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,168.25 : 99,252.38 = 16,920.25 : x
  2. Step 2: Convert to fraction form
    66,168.25/99,252.38 = 16,920.25/x
  3. Step 3: Cross multiply
    66,168.25x = 99,252.38 × 16,920.25
  4. Step 4: Simplify right side
    66,168.25x = 1,679,375,082.70
  5. Step 5: Solve for x
    x = 1,679,375,082.70/66,168.25
  6. Step 6: Final answer
    x = 25,380.38

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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.