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Finding the Fourth Proportional to 119,969.92, 179,936.42 and 40,009.29

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Solution

The fourth proportional to 119,969.92, 179,936.42 and 40,009.29 is: 60,007.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,969.92 : 179,936.42 = 40,009.29 : x
  2. Step 2: Convert to fraction form
    119,969.92/179,936.42 = 40,009.29/x
  3. Step 3: Cross multiply
    119,969.92x = 179,936.42 × 40,009.29
  4. Step 4: Simplify right side
    119,969.92x = 7,199,128,409.34
  5. Step 5: Solve for x
    x = 7,199,128,409.34/119,969.92
  6. Step 6: Final answer
    x = 60,007.78

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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.