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Finding the Fourth Proportional to 139,553.20, 209,329.80 and 132,336.10

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Solution

The fourth proportional to 139,553.20, 209,329.80 and 132,336.10 is: 198,504.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,553.20 : 209,329.80 = 132,336.10 : x
  2. Step 2: Convert to fraction form
    139,553.20/209,329.80 = 132,336.10/x
  3. Step 3: Cross multiply
    139,553.20x = 209,329.80 × 132,336.10
  4. Step 4: Simplify right side
    139,553.20x = 27,701,889,345.78
  5. Step 5: Solve for x
    x = 27,701,889,345.78/139,553.20
  6. Step 6: Final answer
    x = 198,504.15

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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.