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Finding the Fourth Proportional to 111,958.80, 154,504.44 and 64,212

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Solution

The fourth proportional to 111,958.80, 154,504.44 and 64,212 is: 88,613.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,958.80 : 154,504.44 = 64,212 : x
  2. Step 2: Convert to fraction form
    111,958.80/154,504.44 = 64,212/x
  3. Step 3: Cross multiply
    111,958.80x = 154,504.44 × 64,212
  4. Step 4: Simplify right side
    111,958.80x = 9,921,039,101.28
  5. Step 5: Solve for x
    x = 9,921,039,101.28/111,958.80
  6. Step 6: Final answer
    x = 88,613.30

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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.