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Finding the Fourth Proportional to 111,387.20, 166,972.80 and 48,980.48

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Solution

The fourth proportional to 111,387.20, 166,972.80 and 48,980.48 is: 73,423.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,387.20 : 166,972.80 = 48,980.48 : x
  2. Step 2: Convert to fraction form
    111,387.20/166,972.80 = 48,980.48/x
  3. Step 3: Cross multiply
    111,387.20x = 166,972.80 × 48,980.48
  4. Step 4: Simplify right side
    111,387.20x = 8,178,407,890.94
  5. Step 5: Solve for x
    x = 8,178,407,890.94/111,387.20
  6. Step 6: Final answer
    x = 73,423.23

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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.