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Finding the Fourth Proportional to 111,975.92, 154,546.92 and 64,245.08

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Solution

The fourth proportional to 111,975.92, 154,546.92 and 64,245.08 is: 88,669.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,975.92 : 154,546.92 = 64,245.08 : x
  2. Step 2: Convert to fraction form
    111,975.92/154,546.92 = 64,245.08/x
  3. Step 3: Cross multiply
    111,975.92x = 154,546.92 × 64,245.08
  4. Step 4: Simplify right side
    111,975.92x = 9,928,879,239.15
  5. Step 5: Solve for x
    x = 9,928,879,239.15/111,975.92
  6. Step 6: Final answer
    x = 88,669.77

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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.