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Finding the Fourth Proportional to 118,960.60, 178,465.20 and 40,082.80

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Solution

The fourth proportional to 118,960.60, 178,465.20 and 40,082.80 is: 60,132.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,960.60 : 178,465.20 = 40,082.80 : x
  2. Step 2: Convert to fraction form
    118,960.60/178,465.20 = 40,082.80/x
  3. Step 3: Cross multiply
    118,960.60x = 178,465.20 × 40,082.80
  4. Step 4: Simplify right side
    118,960.60x = 7,153,384,918.56
  5. Step 5: Solve for x
    x = 7,153,384,918.56/118,960.60
  6. Step 6: Final answer
    x = 60,132.39

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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.