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Finding the Fourth Proportional to 139,366.40, 209,318.40 and 119,420.96

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Solution

The fourth proportional to 139,366.40, 209,318.40 and 119,420.96 is: 179,361.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,366.40 : 209,318.40 = 119,420.96 : x
  2. Step 2: Convert to fraction form
    139,366.40/209,318.40 = 119,420.96/x
  3. Step 3: Cross multiply
    139,366.40x = 209,318.40 × 119,420.96
  4. Step 4: Simplify right side
    139,366.40x = 24,997,004,273.66
  5. Step 5: Solve for x
    x = 24,997,004,273.66/139,366.40
  6. Step 6: Final answer
    x = 179,361.77

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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.