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Finding the Fourth Proportional to 118,844.20, 178,179.90 and 48,687.40

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Solution

The fourth proportional to 118,844.20, 178,179.90 and 48,687.40 is: 72,995.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,844.20 : 178,179.90 = 48,687.40 : x
  2. Step 2: Convert to fraction form
    118,844.20/178,179.90 = 48,687.40/x
  3. Step 3: Cross multiply
    118,844.20x = 178,179.90 × 48,687.40
  4. Step 4: Simplify right side
    118,844.20x = 8,675,116,063.26
  5. Step 5: Solve for x
    x = 8,675,116,063.26/118,844.20
  6. Step 6: Final answer
    x = 72,995.70

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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.