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Finding the Fourth Proportional to 111,142.80, 166,730.40 and 36,266.40

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Solution

The fourth proportional to 111,142.80, 166,730.40 and 36,266.40 is: 54,404.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,142.80 : 166,730.40 = 36,266.40 : x
  2. Step 2: Convert to fraction form
    111,142.80/166,730.40 = 36,266.40/x
  3. Step 3: Cross multiply
    111,142.80x = 166,730.40 × 36,266.40
  4. Step 4: Simplify right side
    111,142.80x = 6,046,711,378.56
  5. Step 5: Solve for x
    x = 6,046,711,378.56/111,142.80
  6. Step 6: Final answer
    x = 54,404.89

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1.5x scale

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.