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Finding the Fourth Proportional to 118,996.32, 178,251.48 and 66,433.80

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Solution

The fourth proportional to 118,996.32, 178,251.48 and 66,433.80 is: 99,515.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,996.32 : 178,251.48 = 66,433.80 : x
  2. Step 2: Convert to fraction form
    118,996.32/178,251.48 = 66,433.80/x
  3. Step 3: Cross multiply
    118,996.32x = 178,251.48 × 66,433.80
  4. Step 4: Simplify right side
    118,996.32x = 11,841,923,172.02
  5. Step 5: Solve for x
    x = 11,841,923,172.02/118,996.32
  6. Step 6: Final answer
    x = 99,515.04

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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.