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Finding the Fourth Proportional to 129,849.80, 194,628.90 and 54,957.20

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Solution

The fourth proportional to 129,849.80, 194,628.90 and 54,957.20 is: 82,374.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,849.80 : 194,628.90 = 54,957.20 : x
  2. Step 2: Convert to fraction form
    129,849.80/194,628.90 = 54,957.20/x
  3. Step 3: Cross multiply
    129,849.80x = 194,628.90 × 54,957.20
  4. Step 4: Simplify right side
    129,849.80x = 10,696,259,383.08
  5. Step 5: Solve for x
    x = 10,696,259,383.08/129,849.80
  6. Step 6: Final answer
    x = 82,374.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.