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Finding the Fourth Proportional to 111,213.08, 166,820.70 and 28,107.08

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Solution

The fourth proportional to 111,213.08, 166,820.70 and 28,107.08 is: 42,160.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,213.08 : 166,820.70 = 28,107.08 : x
  2. Step 2: Convert to fraction form
    111,213.08/166,820.70 = 28,107.08/x
  3. Step 3: Cross multiply
    111,213.08x = 166,820.70 × 28,107.08
  4. Step 4: Simplify right side
    111,213.08x = 4,688,842,760.56
  5. Step 5: Solve for x
    x = 4,688,842,760.56/111,213.08
  6. Step 6: Final answer
    x = 42,160.89

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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.