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Finding the Fourth Proportional to 190,703.52, 263,162.88 and 105,815.52

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Solution

The fourth proportional to 190,703.52, 263,162.88 and 105,815.52 is: 146,020.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,703.52 : 263,162.88 = 105,815.52 : x
  2. Step 2: Convert to fraction form
    190,703.52/263,162.88 = 105,815.52/x
  3. Step 3: Cross multiply
    190,703.52x = 263,162.88 × 105,815.52
  4. Step 4: Simplify right side
    190,703.52x = 27,846,716,991.90
  5. Step 5: Solve for x
    x = 27,846,716,991.90/190,703.52
  6. Step 6: Final answer
    x = 146,020.99

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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.