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Finding the Fourth Proportional to 139,211.56, 208,851.29 and 44,441.76

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Solution

The fourth proportional to 139,211.56, 208,851.29 and 44,441.76 is: 66,673.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,211.56 : 208,851.29 = 44,441.76 : x
  2. Step 2: Convert to fraction form
    139,211.56/208,851.29 = 44,441.76/x
  3. Step 3: Cross multiply
    139,211.56x = 208,851.29 × 44,441.76
  4. Step 4: Simplify right side
    139,211.56x = 9,281,719,016.97
  5. Step 5: Solve for x
    x = 9,281,719,016.97/139,211.56
  6. Step 6: Final answer
    x = 66,673.48

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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.