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Finding the Fourth Proportional to 190,379.92, 262,717.68 and 105,504.88

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Solution

The fourth proportional to 190,379.92, 262,717.68 and 105,504.88 is: 145,593.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,379.92 : 262,717.68 = 105,504.88 : x
  2. Step 2: Convert to fraction form
    190,379.92/262,717.68 = 105,504.88/x
  3. Step 3: Cross multiply
    190,379.92x = 262,717.68 × 105,504.88
  4. Step 4: Simplify right side
    190,379.92x = 27,717,997,302.28
  5. Step 5: Solve for x
    x = 27,717,997,302.28/190,379.92
  6. Step 6: Final answer
    x = 145,593.07

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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.