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Finding the Fourth Proportional to 129,994.80, 179,476.20 and 106,178.64

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Solution

The fourth proportional to 129,994.80, 179,476.20 and 106,178.64 is: 146,594.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,994.80 : 179,476.20 = 106,178.64 : x
  2. Step 2: Convert to fraction form
    129,994.80/179,476.20 = 106,178.64/x
  3. Step 3: Cross multiply
    129,994.80x = 179,476.20 × 106,178.64
  4. Step 4: Simplify right side
    129,994.80x = 19,056,538,828.37
  5. Step 5: Solve for x
    x = 19,056,538,828.37/129,994.80
  6. Step 6: Final answer
    x = 146,594.62

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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.