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Finding the Fourth Proportional to 111,992.85, 154,550.34 and 66,672.40

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Solution

The fourth proportional to 111,992.85, 154,550.34 and 66,672.40 is: 92,008.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,992.85 : 154,550.34 = 66,672.40 : x
  2. Step 2: Convert to fraction form
    111,992.85/154,550.34 = 66,672.40/x
  3. Step 3: Cross multiply
    111,992.85x = 154,550.34 × 66,672.40
  4. Step 4: Simplify right side
    111,992.85x = 10,304,241,702.24
  5. Step 5: Solve for x
    x = 10,304,241,702.24/111,992.85
  6. Step 6: Final answer
    x = 92,008.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.