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Finding the Fourth Proportional to 139,284.36, 208,936.26 and 60,403.32

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Solution

The fourth proportional to 139,284.36, 208,936.26 and 60,403.32 is: 90,609.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,284.36 : 208,936.26 = 60,403.32 : x
  2. Step 2: Convert to fraction form
    139,284.36/208,936.26 = 60,403.32/x
  3. Step 3: Cross multiply
    139,284.36x = 208,936.26 × 60,403.32
  4. Step 4: Simplify right side
    139,284.36x = 12,620,443,772.38
  5. Step 5: Solve for x
    x = 12,620,443,772.38/139,284.36
  6. Step 6: Final answer
    x = 90,609.20

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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.