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Finding the Fourth Proportional to 139,059.56, 206,800.36 and 134,630.90

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Solution

The fourth proportional to 139,059.56, 206,800.36 and 134,630.90 is: 200,214.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,059.56 : 206,800.36 = 134,630.90 : x
  2. Step 2: Convert to fraction form
    139,059.56/206,800.36 = 134,630.90/x
  3. Step 3: Cross multiply
    139,059.56x = 206,800.36 × 134,630.90
  4. Step 4: Simplify right side
    139,059.56x = 27,841,718,587.12
  5. Step 5: Solve for x
    x = 27,841,718,587.12/139,059.56
  6. Step 6: Final answer
    x = 200,214.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.