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Finding the Fourth Proportional to 139,244.32, 208,679.39 and 75,969.63

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Solution

The fourth proportional to 139,244.32, 208,679.39 and 75,969.63 is: 113,852.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,244.32 : 208,679.39 = 75,969.63 : x
  2. Step 2: Convert to fraction form
    139,244.32/208,679.39 = 75,969.63/x
  3. Step 3: Cross multiply
    139,244.32x = 208,679.39 × 75,969.63
  4. Step 4: Simplify right side
    139,244.32x = 15,853,295,071.60
  5. Step 5: Solve for x
    x = 15,853,295,071.60/139,244.32
  6. Step 6: Final answer
    x = 113,852.36

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1.5x scale

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.