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Finding the Fourth Proportional to 127,939.94, 191,952.36 and 39,194.32

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Solution

The fourth proportional to 127,939.94, 191,952.36 and 39,194.32 is: 58,804.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,939.94 : 191,952.36 = 39,194.32 : x
  2. Step 2: Convert to fraction form
    127,939.94/191,952.36 = 39,194.32/x
  3. Step 3: Cross multiply
    127,939.94x = 191,952.36 × 39,194.32
  4. Step 4: Simplify right side
    127,939.94x = 7,523,442,222.60
  5. Step 5: Solve for x
    x = 7,523,442,222.60/127,939.94
  6. Step 6: Final answer
    x = 58,804.48

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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.