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Finding the Fourth Proportional to 111,154.80, 166,618.80 and 54,908.40

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Solution

The fourth proportional to 111,154.80, 166,618.80 and 54,908.40 is: 82,306.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,154.80 : 166,618.80 = 54,908.40 : x
  2. Step 2: Convert to fraction form
    111,154.80/166,618.80 = 54,908.40/x
  3. Step 3: Cross multiply
    111,154.80x = 166,618.80 × 54,908.40
  4. Step 4: Simplify right side
    111,154.80x = 9,148,771,717.92
  5. Step 5: Solve for x
    x = 9,148,771,717.92/111,154.80
  6. Step 6: Final answer
    x = 82,306.58

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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.