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Finding the Fourth Proportional to 111,979.92, 154,552.44 and 64,249.08

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Solution

The fourth proportional to 111,979.92, 154,552.44 and 64,249.08 is: 88,675.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,979.92 : 154,552.44 = 64,249.08 : x
  2. Step 2: Convert to fraction form
    111,979.92/154,552.44 = 64,249.08/x
  3. Step 3: Cross multiply
    111,979.92x = 154,552.44 × 64,249.08
  4. Step 4: Simplify right side
    111,979.92x = 9,929,852,081.76
  5. Step 5: Solve for x
    x = 9,929,852,081.76/111,979.92
  6. Step 6: Final answer
    x = 88,675.29

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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.