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Finding the Fourth Proportional to 139,941.70, 209,912.55 and 132,360.10

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Solution

The fourth proportional to 139,941.70, 209,912.55 and 132,360.10 is: 198,540.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,941.70 : 209,912.55 = 132,360.10 : x
  2. Step 2: Convert to fraction form
    139,941.70/209,912.55 = 132,360.10/x
  3. Step 3: Cross multiply
    139,941.70x = 209,912.55 × 132,360.10
  4. Step 4: Simplify right side
    139,941.70x = 27,784,046,109.26
  5. Step 5: Solve for x
    x = 27,784,046,109.26/139,941.70
  6. Step 6: Final answer
    x = 198,540.15

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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.