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Finding the Fourth Proportional to 179,462, 247,662.68 and 99,979.12

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Solution

The fourth proportional to 179,462, 247,662.68 and 99,979.12 is: 137,974.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,462 : 247,662.68 = 99,979.12 : x
  2. Step 2: Convert to fraction form
    179,462/247,662.68 = 99,979.12/x
  3. Step 3: Cross multiply
    179,462x = 247,662.68 × 99,979.12
  4. Step 4: Simplify right side
    179,462x = 24,761,096,803.24
  5. Step 5: Solve for x
    x = 24,761,096,803.24/179,462
  6. Step 6: Final answer
    x = 137,974.04

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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.