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Finding the Fourth Proportional to 111,774.56, 154,170.81 and 75,902.29

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Solution

The fourth proportional to 111,774.56, 154,170.81 and 75,902.29 is: 104,692.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,774.56 : 154,170.81 = 75,902.29 : x
  2. Step 2: Convert to fraction form
    111,774.56/154,170.81 = 75,902.29/x
  3. Step 3: Cross multiply
    111,774.56x = 154,170.81 × 75,902.29
  4. Step 4: Simplify right side
    111,774.56x = 11,701,917,144.73
  5. Step 5: Solve for x
    x = 11,701,917,144.73/111,774.56
  6. Step 6: Final answer
    x = 104,692.14

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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.