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Finding the Fourth Proportional to 186,728.65, 279,699.11 and 126,793.92

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Solution

The fourth proportional to 186,728.65, 279,699.11 and 126,793.92 is: 189,923.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,728.65 : 279,699.11 = 126,793.92 : x
  2. Step 2: Convert to fraction form
    186,728.65/279,699.11 = 126,793.92/x
  3. Step 3: Cross multiply
    186,728.65x = 279,699.11 × 126,793.92
  4. Step 4: Simplify right side
    186,728.65x = 35,464,145,495.90
  5. Step 5: Solve for x
    x = 35,464,145,495.90/186,728.65
  6. Step 6: Final answer
    x = 189,923.43

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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.