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Finding the Fourth Proportional to 112,213.80, 168,093.90 and 69,964.20

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Solution

The fourth proportional to 112,213.80, 168,093.90 and 69,964.20 is: 104,804.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,213.80 : 168,093.90 = 69,964.20 : x
  2. Step 2: Convert to fraction form
    112,213.80/168,093.90 = 69,964.20/x
  3. Step 3: Cross multiply
    112,213.80x = 168,093.90 × 69,964.20
  4. Step 4: Simplify right side
    112,213.80x = 11,760,555,238.38
  5. Step 5: Solve for x
    x = 11,760,555,238.38/112,213.80
  6. Step 6: Final answer
    x = 104,804.89

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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.