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Finding the Fourth Proportional to 251,138.92, 346,571.94 and 137,969

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Solution

The fourth proportional to 251,138.92, 346,571.94 and 137,969 is: 190,397.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,138.92 : 346,571.94 = 137,969 : x
  2. Step 2: Convert to fraction form
    251,138.92/346,571.94 = 137,969/x
  3. Step 3: Cross multiply
    251,138.92x = 346,571.94 × 137,969
  4. Step 4: Simplify right side
    251,138.92x = 47,816,183,989.86
  5. Step 5: Solve for x
    x = 47,816,183,989.86/251,138.92
  6. Step 6: Final answer
    x = 190,397.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.