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Finding the Fourth Proportional to 99,179.70, 136,867.82 and 54,467.70

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Solution

The fourth proportional to 99,179.70, 136,867.82 and 54,467.70 is: 75,165.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,179.70 : 136,867.82 = 54,467.70 : x
  2. Step 2: Convert to fraction form
    99,179.70/136,867.82 = 54,467.70/x
  3. Step 3: Cross multiply
    99,179.70x = 136,867.82 × 54,467.70
  4. Step 4: Simplify right side
    99,179.70x = 7,454,875,359.41
  5. Step 5: Solve for x
    x = 7,454,875,359.41/99,179.70
  6. Step 6: Final answer
    x = 75,165.33

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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.