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Finding the Fourth Proportional to 139,569.20, 209,353.80 and 132,352.10

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Solution

The fourth proportional to 139,569.20, 209,353.80 and 132,352.10 is: 198,528.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,569.20 : 209,353.80 = 132,352.10 : x
  2. Step 2: Convert to fraction form
    139,569.20/209,353.80 = 132,352.10/x
  3. Step 3: Cross multiply
    139,569.20x = 209,353.80 × 132,352.10
  4. Step 4: Simplify right side
    139,569.20x = 27,708,415,072.98
  5. Step 5: Solve for x
    x = 27,708,415,072.98/139,569.20
  6. Step 6: Final answer
    x = 198,528.15

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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.