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Finding the Fourth Proportional to 139,194.60, 208,790.90 and 34,012.60

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Solution

The fourth proportional to 139,194.60, 208,790.90 and 34,012.60 is: 51,018.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,194.60 : 208,790.90 = 34,012.60 : x
  2. Step 2: Convert to fraction form
    139,194.60/208,790.90 = 34,012.60/x
  3. Step 3: Cross multiply
    139,194.60x = 208,790.90 × 34,012.60
  4. Step 4: Simplify right side
    139,194.60x = 7,101,521,365.34
  5. Step 5: Solve for x
    x = 7,101,521,365.34/139,194.60
  6. Step 6: Final answer
    x = 51,018.66

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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.