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Finding the Fourth Proportional to 127,940.65, 191,910.79 and 34,446.49

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Solution

The fourth proportional to 127,940.65, 191,910.79 and 34,446.49 is: 51,669.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,940.65 : 191,910.79 = 34,446.49 : x
  2. Step 2: Convert to fraction form
    127,940.65/191,910.79 = 34,446.49/x
  3. Step 3: Cross multiply
    127,940.65x = 191,910.79 × 34,446.49
  4. Step 4: Simplify right side
    127,940.65x = 6,610,653,108.63
  5. Step 5: Solve for x
    x = 6,610,653,108.63/127,940.65
  6. Step 6: Final answer
    x = 51,669.69

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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.